My AM kept enabling my AD

I asked my mom what he said about me, she told me that he got pissed over incorrect name on aunt and uncle on one reply on WhatsApp, and using her first name is disrespectful.
I told her my version of the story, he litterally straight up told me that I'm stupid, Americanized, mocked western greeting and told me if I can't use it correctly, don't brother talking in family chat.

She will try to talk to dad about using more constructive feedback, otherwise I won't know or learn. Then she still enabled his behavior over stressful work life for 20 years and tell me to understand, ignore his verbal abuse. (I'm rephrasing her broken English to clear messages.)

Yes, work life sucks, but he still done inexcusable behavior since I was a kid. (Like he verbal abuse my mom to miscarriage, like he wanted better child than me.)