I suppose I shouldn’t be surprised that this would be a change for Linux code (I’ve never paid attention to it). If you believe in indenting from the left, and you have the typical wonky (to me) irregular and wonky line wrapping/breaking rules, 80 columns frequently causes very weird pile-ups on the right margin.
I tend to champion both wider lines (120 or so, never rigidly any number) and much simpler and more regular principles for breaking and indentation.
Hope there aren’t too many codebases developing for x64 and ARM that need 1980s-era limitations on code!
