That will remove most of the user data but you should also remove 4076 from some sorted sets like users:joindate users:reputation users:postcount
https://github.com/NodeBB/NodeBB/blob/master/src/user/delete.js#L72-L84
Not sure if anyone else has noticed this, but when using this site on mobile, the header often masks the top part of the screen making the first post unreadable.
I've fixed this annoying bug (it's always been there but is now much worse with the NodeBB header that was added a while back) over at Sudonix.com by making the header fixed and allowing other sticky elements to float over the top using z-index
so not an issue as such for me, but thought I'd report it here.