Are these issues interfering with your daily usage? If so, how does it affect you?
If I have to break them down individually...
1. Interface bugs are distracting. Even Android is smoother flowing now between screens. My iPhone still does this weird "flicker" whenever both the lockscreen and home screen are set to be the same. Heck, it flickers even when I'm trying to view notifications in the notifications center. And sometimes, the animation doesn't quite "finish" per se so I'm seeing half of my background blurred and the other half isn't. That's just crazy.
2. If I don't perfectly swipe down when I'm trying to access the notification center, I may accidentally go into the widget screen to the left. This is already a big problem with the Facebook app and its obnoxious swipe-left-to-reveal-camera, but now it is there at the OS level on my phone. Every time I swipe down now (or "up" if I want to get out of the notification screen), I have to make absolutely sure it's "up" or "down" and not "a bit slanted to the left/right" because that will trigger the widget screen instead of unlocking. It's annoying as hell.
3. Same problem as above, but in the opposite direction: it triggers the camera. Pressing home to get back from that camera screen will only bring me back to the notification center, and not all the way to the home screen. Suddenly, "home" is now very "far" away. This is very bad UI design choice.
4. As above, I have to manually clear every single notification now by long swiping each and every single one because the "X" button simply does not want to work, and even when it does, it only clears a single day. I may go 2-3 days (since Saturday 'til now, for instance) without checking all of the notifications I've received unless it's something super urgent. Clearing notifications now is a huge monumental task for me. On Android, there's a single button I have to tap. One. Done. I was hoping iOS 11 would address this problem from iOS 10 but no, it broke the "X" button so it's even worse.
5. No option to roll back to iOS 10.3.3, which was rock stable with all of those features for me, means... my iPhone 6+ is now essentially a big buggy brick. I write software as a profession so I very clearly separate devices that I'm testing things on, and devices that I'm actually using on a daily basis. My iPhone 6+ is now worse than whatever I'm working on because I have absolutely no way to "fix" any of its issue, which adds to the frustration. I did not particularly like the fact that I had to "fix" every little thing on my Android devices by myself (and I very often complained about it in the other communities) for all of the past major iterations, but at least I had the option of doing so. I could live with the "walled garden" because past major updates from Apple were stable, even though the UI continually bugged me. But now the UI is disconnected and the stability is gone. It's just bad.
Apple forcing this update on us (it notified me every hour on iOS 10.3.3 to update so I ultimately had to press "Yes") is making me rethink my device choices.