The person you replied to called it insulting. It's not really about what you think they should do; all I'm saying is what I think it's likely people will do. Formulating criticism in a way that the people it applies to are not insulted is, I think, the best way to actually get them to fix it.

It's hard, I know. But all I'd do when someone refers to Rubik's Cubes and DnD is shrug it off and think it doesn't apply to me.