To begin with, there is no such thing as a ‘molecule of margarine’. The main ingredient of the margarine I have on hand is soybean oil, which is still not a specific molecule and, more to the point, is all-natural by any reasonable definition of the concept.
In addition, atoms are not trivial little things that fly away and flit in and out of molecules at random. They obey known laws and only do things when certain external conditions have been met, and they contribute greatly to whatever molecule they are a part of. To imply that chemical ‘closeness’ implies any degree of equivalence is utter ignorance of the most basic chemistry.
Now let us let this nonsense rest in the minds of braying fools.
Well Pectin is in a way vegan gelatin, as it is derived from the cell walls of plants and not from animals as gelatin.
Anyway adding sugar for flavor or jellied peaches is of course different from saying that yogurt is not cultured milk. Basically you have yougurt with a jam or candied fruit.
That was probably Fage brand yogurt you had, Ca3799. That’s the brand I buy, because it’s thick and velvety. After reading this thread, I wondered if that thickness was the result of gelatin or anything, so I went to their website to look up the list of ingredients which make up their classic yogurt. Nope, nothing but milk, cream and yogurt culture. So thick, luscious yogurts without thickeners do exist.
BTW, Fage makes a nonfat yogurt which is just as thick and unctuous as their full-fat product. I was skeptical that it could taste good, but it’s about the best nonfat product I’ve ever tasted. If you still want your Greek yogurt and honey but without fat, it’s a doable thing.
It’s an overstatement to claim that yogurts thickened with things like pectin are not really yogurt. By law, all products labeled “yogurt” in the U.S. must be made from cultured milk. My experience, though, is that many commercial yogurts are minimally cultured and rely on added thickeners for their textures. I’m sure that adding thickeners saves money for the dairies - they can ship their yogurt right away, rather than wait several days for the fermentation to do its work.
Why is this important? Culturing converts lactose to lactic acid, giving yogurt a sour milk flavor. A yogurt that relies more on added thickeners and less on culturing won’t be as tart. In this sense, many thickened yogurts aren’t really yogurts - they don’t taste like yogurt should taste.
There was a study done at my university to see if a yogurt could be made from goat’s milk that tasted good, had a good texture and was similar to traditional Filipino yogurt. (Note: this university is nowhere near the Phillipines, I think one of the contributing professors must have been from there because it seems like a pretty random condition considering the extremely small Filipino population of this province). They made the yogurt with active culture and used carragheenan to thicken it, not gelatin.
You can google on soy yogurt and find numerous products. Some companies - not all - have labels that specifically call themselves soy yogurt, not soy cultured product. Take a look at this WholeSoy soy yogurt page.
It’s also possible to have a vegan product, as Nancy’s cultured soy is. It’s possible that using milk-based cultures allows the soy yogurt label and vegan cultures do not, but I’m not sure about that.
Thickeners have a specific meaning in food processing. Yogurts do not normally use thickeners.