Everyone has a temper, it depends on whether they can control it.

Isn't there a saying, "Losing your temper is instinct, but being able to control your temper is your ability."

Just like the news report above, just because his wife refused to cut onions for him, the man picked up a knife and stabbed his wife. This reflects that this man cannot control his emotions and has violent tendencies. This cannot be excused by drinking. Wine says this

I won’t take the blame.

He picked up the knife just because his demands were not met. Only his wife knew whether he would hit or beat his wife at every turn in his daily life.