I have a Note 20 Ultra (One UI 5.1, Android 13) and I have no complaints about the UI, generally, but I've been using Nova Launcher for over a decade, so I might not be the best judge on Samsung's UI's over the years.
Battery life is fine. It lasts a day without charging, easily, with a good bit of use, and the power saver modes extend that.
I'd like one of those new folding phones, but the Samsung ones are waaaaay too expensive and getting an Oppo or Huawei device in the US is tricky. Other than that, the newer devices just don't have enough that's better or interesting, so I'll probably keep this until it breaks in a way I can't fix (replaced the frame, battery and front screen recently for like $120)
Mayor Bass sets a time frame for ICE to operate unimpeded.