Personally, tap to scroll to top is a must have feature for me in an iOS (or Android) client. Don’t see an issue with it being an option to disable, but wouldn’t want to see the feature go entirely and I think it should be on by default for consistency with the OS.
I usually disable the quick jump buttons as I don’t really like the ever presence overlay, and it’s not something that really feels like iOS to me. I actually find those buttons more jntrusive. Given that the jump to tops what I use.
With the size of phones I don’t find myself ever accidentally clicking the region and don’t recall ever accidentally triggering a scroll when I intended to bring up notification or control center.
So yeah, I think having an option isn’t a bad idea, but would want the feature to stay.