I feel a bit unqualified to comment given my lack of points.
But from a personal perspective someone editing my code to adhere to style guides is a very non-confrontational way to enforce these standards. Opinions may differ, but "oh you made that better: I'll do that myself text time" seems a lot less confrontational than "you have to format your code this way and follow these arbitrary rules".
This involves more work on the part of the editor / moderator, but perhaps this is precisely what makes it more acceptable to people: You care about this enough to do a little work for the answering and the community, so I respect your actions.
Question as to how accepted these standards are
I have a little distrust of the legitimacy of coding standards. This standard is mostly by one or two authors and three years old and moderately opinionated about some issues. My impression that lots of the accepted standards that people talk about in
elisp comes from people experience in other lisps. I have been referred to google's common lisp standards before.
In addition, I would note that emacs is very stateful (marks, point, buffer, restrictions, windows) while lisp tends to be quite functional, which means this shipping of standards may not be legitimate.
That said camel case versus hyphens seems a pretty straightforward question!