Aldarc
Legend
Yeah, that's true. Eberron was first published in 2004. The same year as World of Warcraft even. That was 17 years ago, so how slippery of a slope are we talking about here? Seventeen years is longer than 3e and 4e's combined lifetime. Seventeen years is about the average age of a 5e player. They are players have lived their entire lives in the shadow of popular media that have humanized and recontextualized the "monsters" of older settings and games.The thing is, half of those things you mention are already a FR, Eberron and Mystara thing at the moment since ages ago. So its hardly a slope, its moreso "Maybe the worldbuilding isn't always the best and we can afford to look at it, see what works, rip out what doesn't, and don't put stuff on a pedastal just because it was written by someone else" and that's going to get me dumping on Dragonlance for another few hours.
Also, Golarion has also been re-examining and evolving its own problematic tropes as well (e.g., orcs, hobgoblins, goblins, the Mwangi Expanse, etc.).