radiantanor:

Random headcanon: In Noldorin culture, it’s considered acceptable, even necessary, to politely correct other people when you notice them making mistakes, since that way you’re helping them learn and improve. Unconstructive, deliberately nasty criticism, the sort that can make someone feel they’re so bad at it they shouldn’t even try anymore, is considered the worst thing you could do, but letting others keep doing something wrong can be seen as almost as rude. That extends from art, craft or music to things like grammar, spelling, pronounciation. (The exception would be if it’s obvious that the person wants to finish whatever it is by themselves.)

Of course, that means other Elves and Edain, whose stance on help is more “if we need it we’ll ask for it”, may sometimes view them as pushy know-it-alls. Like, if someone tried learning Quenya and every other sentence someone interrupted with corrections and advice. Or worse, if the Edain were building something and these perfect-seeming Elves show up with advice and offers to help and they clearly mean well but it’s not exactly helping with the inferiority complex some Edain were already developing. (Some Noldor did realize that this could be viewed as annoying, and became thoroughly unhelpful to members of other cultures but I’m totally not looking at anyone specific here…)