I have the Fairphone 6 (not the plus) running /e/os. It's pleasant enough that when I had to use a vanilla android tablet I was kind of like (is this how you people live?! 😄 this is awful!)

I dont have this newest gen6 plus, just the slightly less new gen6 with e/os, but I wouldn't imagine the difference is huge. Has generally worked about as well as any regular android phone Ive had, with a few minor annoyances like the "paste" button for text often being invisible, such that I just have to press where it should be to make it work.