Am I petty for blocking?

Ugh this all feels so silly and childish, but here goes.

A used to be a close friend. We drifted over the years and I felt they were distant and that’s fine.

There was a huge misunderstanding with a third friend, who thought A was invited to something and explicitly asked A. A responded saying we weren’t close after I said weird things about my partner.

It doesn’t matter, but I truly have no idea what I could’ve said. I’ve asked my friends and they’re shocked. I love my partner and would never say anything untoward.

People are entitled to their own feelings but i can’t help but be shocked that i said something so bad to deserve being written off. It’s not that surprising because it’s known within my circle that this person tends to build up narratives and has written friends off for perceived comments/behavior that others didn’t see.

Anyway, I reach out to A to clear up the confusion and apologize for it. I also sent (what I thought) was a heartfelt message saying not sure why we drifted, not forcing an explanation or reconciliation but hope you’re well.

Their response was “leave me out of whatever weirdness you have going on please”.

I’m still processing I guess, but their response really upset me. I responded saying ‘ok, hoped to be civil but all the best’ and blocked them.

Friends are shocked that I blocked them, and i can’t help feeling like I might have overreacted. I was pretty mad at the text, we’re damn near 30 and can’t be a little polite? A “idk what’s going on and I don’t want to be involved” would’ve been fine.

I just genuinely never want to hear from this person again and don’t want to get into any type of conversation, even if the likelihood of them initiating is low.