Don't listen to Keith, one UI 7 is completely customisable to how you want.
To be honest, you can either roll with the times, or stay in the past like Keith!!
There are a few complaints, but there are more positives, if you've used windows PC's over the years, windows 95, windows millennium and so forth. Your going with the time, just downloaded it and play around with it, whilst using it I've found that I'm using less ram by keeping my device care as a widget, it's a fresh new look and feels smooth
Not sure why a legend would be so negative, I've got it on my ZF6 and Tab S10 Ultra