A flying roach did that to my dad.
To put his reaction into perspective I once saw him pop his thumb like a grape with a 5kg hammer and he barely blinked. He put electrical tape on it, then drove a skid steer mini digger all day using that thumb to steer it.
He screamed bloody murder when the roach went in. He yelled and hit his head and went completely nuts the whole way to the hospital. It was biting apparently.
People wonder why I am completely fine handling spiders, snakes, basically anything but when I see a roach I must immediately kill it.
The demand for no contact is extreme and controlling behaviour and not something I would agree with based on the information provided.
Marriage breakdowns happen, by itself that isn’t a reason to ruin a parent-child relationship.