I'm a user for about 20 years.

I must be lucky. I had no issues with pulseaudio. In fact I thought it was so wonderful how you could hear multiple applications at the same time!

I thought gnome 3 was really cool as well. I didn't use it as long as I did 2, but that's because I found out about tiling window management (and later scrolling window management). But I liked the design of Gnome 3, not sure why. Felt modern, like a bold step in a modern direction. 😊

Systemd I just have no feelings about. I'm not well-read about the drama or how or why it's a badly designed system. I don't write my own units or whatever. I just start/enable and stop services. 😅

But these were just examples. Maybe you mean more stuff have been bad coming from Redhat.