Some nit picks- Not the end of time but when the moshiach comes. This could be the end of time. It could be next Tuesday. AFAIK the prohibition on tattoos is another ‘other groups do this. Jews are forbidden to do it’ law. Cremation is forbidden because it is seen as a denial of G-d’s power to raise the dead when the time comes. It is also believed to be traumatic for the soul (In case of involuntar cremation, G-d shields the soul from this). For a long time, many Jewish groups were against harvesting organs from donors. I haven’t kept up with the debate on that.
ẖrj-ḥꜣb ḥrj-tp = chief lector priest; later “ḥrj-tp” became a general term for “magician” :
Is that name even Egyptian?
It is not just in Judaism that, while a serious, virtuous student may supposedly attain miraculous powers through advanced study, they are not the point, just a by-product of deep understanding/enlightenment and one is not even supposed to perform them like some common entertainer: Iddhi - Wikipedia [“While such powers are considered to be indicative of spiritual progress, Buddhism cautions against their indulgence or exhibition since such could divert one from the true path of obtaining suffering’s release.”]
I’ve heard that it’s because our body isn’t ours, but belongs to God. And we should respect it and care for it.
The real reason is that Leviticus 19:28 says:
You shall not make gashes in your flesh for the dead, or incise any marks on yourselves: I am the LORD.
I think the notion that “preserve life” takes precedence over a lot of other things has tipped the balance on that to “acceptable”, or even “praiseworthy”, particularly among the Reform/liberal branches.
From my reading, it’s unclear what the etymology is. Some people think it’s Arabic, others think it might be Beja. There are competing theories.
But even if it’s for example an Arabic name, it could be Arabized from an earlier name that ties back to Nubia or Egypt.
Certainly an amount of physical cleanliness is commanded along with ritual purity. OTTOMH We are commanded to wash our hands before eating.
I’m sure the reason for the commandment, what exacty and precisely it means, and exactly and precisely what to do or refrain from doing in order to follow it have been thoroughly debated through the ages. But IIRC a lot of the commandments in Leviticus served to isolate Jews from the cultures around them. Personally, I believe that was part of the intent. If I can only drink certain wine, eat kosher meat, and only eat food from a kashered kitchen with two sets of utensils and dishes- I will not be eating at the houses of my gentile friends. I will probably spend more time with other Jews. If you want to keep the religion alive and distinct, those are both good things.
The debate I spoke of was more in Conservative and Orthodox groups. There are a lot fo subtle arguments I barely remember. One issue is that the legal definition of death and the definition in the Talmud are not the same. IIRC, as long as a person has a heartbeat and is breathing, they are alive according to Jewish law. It does not matter if they are permanently brain dead, or if most of their brain was removed in a horrible accident. Legally, we can withdraw food and other car from such a person, wait for them to die, and harvest their organs. Under a strict reading of Jewish law, this is murder. While many things are premitted to save life, killing an innocent is not one of them. So, even though the organs in question would save several lives, it would come at the cost of killing an innocent person. OTTOMH I do not remember what the various rulings were on somebody who had no heartbeat on their own and could not breathe on their own, but is being kept alive by machines.
A friend shared an article with me last year. It was an anouncement in the development of growing meat in tanks in labs. One of the poeple in the discussion was a rabbi. One of the scientists said they might be able to grow meat from cells found in pig saliva. The rabbi said that the law prohibits Jews from eating flesh from pigs (I cannot remember his exact words and his cites) but meat grown this way would be outside the prohibition. The scientist also said they could grow meat from a hair cut from a pig. The rabbi said that would not be kosher. One of the laws of Noah forbids eating ‘a limb torn from a living animal’.
There have been plenty of learned Jews weighing in on whether a sentient computer would have a soul, how exactly a Jew in a space station should observe Jewish holidays as they begin and end at sundown, and othe fun things in the twenty first century.
We need to invent a Petri dish with two-toed hooves and a ruminant stomach. 
That’s not what happens. In most countries death is defined as brain death, and generally the organs are harvested while the heart is still beating. AFAIK for a heart transplant, this is essential.
I recall reading articles in the past saying this is contrary to Jewish religious definitions of death, and a reason organ donation rates are comparatively low in Israel.
I have some familiarity with a wide variety of Jewish circles, and I think I read about this concept in a book at some point, but I’ve never heard an actual Jew of any denomination talking about it in any context. Maybe Chabad believe in it, but it’s certainly not something they talk about in public.
As is discussed in Smapti’s thread, the ritual of Abramelin may have a foundation in Kabbalah, but various clearly non-Jewish influences have been grafted on. I think most Jews wouldn’t even consider what he’s doing Jewish enough to fall into the category of cultural appropriation.