Bro, Samsung's UI Hands down is Bullshit and hangs like hell, not even sparing the Note8. We don't know about the S9 yet, though I have positive hopes for it.
Please specify the "bugs" you're saying we have. There are nearly none! Yes, small glitches might be there which are well resolved in updates.
And except for the mic issue (which I never faced &many others haven't) &camera issues, I think there are no other things that can be called bugs. While the amount of hangs, glitches in Samsung's UI are many. You aren't a part of Samsung's forum so you don't know. That's it.