Yes, these got a lot worse after Tahoe. The past few versions have all had issues on multiple machines.

None of this sounds like a hardware error. Something like notification scrolling is simple bad programming and bad QA. You scroll the list of them, but when the mouse cursor ends up on a gap between them, the new scroll event doesn't apply. They're all individual even though shown together.

Or a black screen on wake - that has the mouse cursor and login prompt, it just sometimes doesn't load the wallpaper or does it slowly. Not hardware - just something buggy. It's unbelievable when I compare to Leopard or whichever version it was introduced the rotating 'cube' of login screens, which always had wallpaper and loaded fast. Here we are fifteen years later with incredibly better hardware and the thing lags.

Same for the rest.