While I agree that some of these are annoying, as several other posters have said, none of them are “trendy”. A few are really old, such as “awesome”. That one’s been around since I was a kid in the 60s.
And a few are positively ancient, such as “easy-peasy” and “cutie patootie”. Hardly baby talk, they’re old style (1920s-ish) “trendy” sayings, akin to 23 Skidoo and “the bees knees”. Personally, I like them both just for that reason. I love stuff that’s from that era.
And I’m sorry, I’m going to anti-rant for “I know, right”? Such a useful saying. A good for instance, the light rail had issues a week or two ago, and we had to take a bus up to a different station to get the rest of the way into town. I’d been riding near some tourists with whom I’d been chatting before the train stopped.
As we (finally, after a good half an hour wait) got on the bus, this guy just PUSHED his way past everyone already on the steps of the bus, all of us pushed aside made I contact and this old grandpa-ish guy says “I know, right”? It was completely of the moment, every single person was instantly connected by the same thought, and one tiny (and very quick) little phrase, just said it all. And the old white dude saying it was cute and funny.
A lot lighter, more fun, and time-saving than standing on the steps of the bus discussing “well, that fellow was rather clueless wasn’t he”. “Why, yes, we believe he was, and rude too”.
I get that over-use of popular sayings can be annoying, but they’re popular and well-used for a reason, they have a place, and they can make sense.