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I’m right where you are. Very happy Apple customer since my first PowerBook G4. Currently have an M1 Max, an iPhone 17 Pro, the iPad Pro, HomePod, Apple TV, and Watch Ultra. All the _just works_ feeling and reliability seem to be gone. Tahoe is so unstable that I now restart the Mac every day, when in the past it happened on software updates only. Apple Music is another huge mess, I can’t comprehend how can it be so…
I'm sorry but if your out is linux and windows because you're not happy how stuff doesn't "just work" in the Apple ecosystem boy are you in for a bad surprise. However bad you think Apple is getting with MacOS - windows is getting worse. And Linux ? Good luck getting decent hardware that will run without having basic functionality issues. Queue the linux brigade "my PC works perfect, what linux issues are you having"…
Your experience isn't uncommon, but it's largely the result of trying to force a square peg into a round hole. There are thousands of different smartphones, game consoles and set-top boxes that rely on Linux for all of their basic functionality. You only get problems trying to smash reverse-engineered drivers and hardware together expecting OEM-level support. If you want good Linux support, pay for good Linux support.