Now don't get me wrong, standard qualifier from an avid anime watcher, yes, isekai fantasy anime was always generally considered pretty trash. I consider it the junk food of anime where you know it's terrible for you but you kind of watch it anyway and I've sometimes found it entertaining because the studios redeem the shows with decent character writing and backstories.
The last couple of shows overall have been so bad it's surprising and it's almost woke levels of shittiness and I hope this is just a blip because it's summer anime but how do you manage to fuck up such a basic premise as making an interesting fantasy story? It doesn't have to be original or even amazing, just make it decent. I'm seeing the newer stuff come out and it's like they've shamelessly copy-pasted scenes and plastered them onto the new characters and their budget is clearly very low because you've got the poorly rendered 3D monsters problem again.
Maybe Frieren raised my expectations way too much but even by Isekai trash anime standards it's been a particularly poor showing at the moment. Once you notice all the shit they do to cut corners in animation like literal slideshow scenes with audio ( It's usually a hotspring scene or they're 'wandering' around a market ) it's really hard to unsee it and I despise studios that do this.
I think there has been tons of trash anime for decades, but a lot of it didn't make it to the west, even with fan subs. Pretty much every season still has a small handful of quality shows, even if it's just one or two.