OnePlus 7 Pro here. Just too big for one thumb to get to all the corners it needs to go to. Not a deal breaker for me, but slightly smaller would be great. Not sure how the pop socket would fix that.
If you can’t imagine it, seriously, it’s a $10 thing. Just try it. Give it a week for you to get used to it. If you hate it you’re not out a lot of time, money, or effort.
I can also almost move my thumb to all four corners (top right is a little off)