It's profoundly annoying that it's correct, isn't it! Every time I wince at reading something that feels wrong I have to remind myself that it’s ultimately only wrong because of convention.
(I do occasionally slip, and correct its/it's, your/you're or they're/their/there in someone's comment, but only if that comment is aggressively or nastily calling someone else stupid.)
> If those who correct can’t or won’t explain why one is correct over the other, then it simply isn’t.
I will try to remember this and also execute it with kindness and trivia, like you suggest, in the future.
Thank you.