This is really cool, and I agree that it's more prevalent on Fedi than elsewhere. I will throw a caveat in here that for non-dude, non-white, non-cis people on here it's a bit less consistent. There are a lot more people willing to correct you incorrectly, respond aggressively to correction themselves, etc.
Tbc: This is less a 'correction' than an expansion - Value this climate of civility, but make sure you're equally applying it. I wish this level of discourse for everyone.