> Arbitrary rules like line width help exactly 0 people per day

I use a linter, it warns about long lines (adjusted to 100), so I reformat or split them and the code seems more readable. Also, it has consistent formatting (other rules), though I occasionally mark some lines to be ignored.

I'd say it helps me, which is >0 people. You don't have to follow norms and/or best practices, but some find it useful.