Why insult someone right before ghosting them?

26F was briefly dating a guy and within time I realized we weren’t compatible and tried politely having that conversation with him. Maybe it would lead to a breakup, maybe it would lead to us working on the relationship and just having a tough conversation. In response he freaked out as if he was an emotional high schooler, started insulting me and trying to make me feel bad and guilty for God knows what. Then never heard from him again. There was no reason for things to end in the manner that they did.

Men, if you do that (the slew of random insults then go ghost), why? Do you want me to do some self-reflecting so I’ll come running back to you feeling all bad and guilty? It feels like a tactic. Women feel free to share your thoughts too

EDIT: he was 33 so wild behavior from someone older than me