That’s a scary thought (at least, to me). But all change is scary.
The thought is a new wave of people who only know LLM-generated sites, so those design patterns are what they demand/emulate/etc. across the spectrum of user interfaces.
The only previous trend I can draw a parallel to was when Comic Sans and Microsoft Clip Art dominated every flyer and poster.
Maybe it’s my weird aesthetic but I liked this style since before llm. My designs were pretty similar and boxy with fake shadows. Also, this specific one reminds me of the style that dev.to I think had a few years ago, and back then it was very different. So I would say I like it even though I have seen other designs. I also like very brutalist, Craigslist like design and Japanese websites. Not a fan of very advanced designs.