Although I sympathize with your frustration, I don't agree that quality is worse overall. I remember many long hours using Conflict Catcher to figure out which extensions were crashing my Classic macOS system. Before OS X, my Mac crashed almost daily. "It just works" was always - and always will be - a myth.
I think this issue is a matter or perspective. The old Apple was much smaller and didn't have multiple hardware platforms in multiple markets (ie: mobile, desktop, entertainment, etc). Considering how much they've grown, I actually think they've done a pretty good job of maintaining quality.
But I also see the cracks forming. I worry that they are spreading themselves a bit thin. The constant price increases on what were already premium-priced products is not sustainable. I hope their foray into "spatial computing" isn't a disaster. Vision Pro looks like a very impressive product, but the price is absurd and I'm not sure they're reading the room correctly in terms of market interest/potential.
I agree, though, that they have lost their charm. I used to love Apple, the company, but I'm really turned off by their nannying, controlling, hypocritical behavior. They just aren't very likable these days in my opinion. From a corporate (not product quality) standpoint, today's Apple gives me '90s Microsoft vibes.