That’s exactly right, but they seem to have a tendency towards that pattern for some reason. All you can do if you care about someone with that reaction to alcohol is not facilitate or encourage the behavior at all. Go hiking or fishing instead of the bar, etc. No alcohol allowed on the boat, etc.
That doesn’t make asshole behavior right or not in need of responding to, but it does make it shitty for the people whose reaction to alcohol is to become a gigantic asshole. I’ve gone through a (rather flimsy) entrance wall with one of the nicest (when sober) gals I knew.
She was an absolute sweetheart who always conducted herself well, until she flipped the switch. It usually happened fast. One minute she’s fine, the next minute she’s getting in the bartender’s face, demanding more booze RIGHT NOW. She was the heaviest person I rear-clinched carried out (most of the way) by the hips by far, and an example of local dive bar tolerance for local people who should have been banned long ago…
As per the thread, avoid these types when possible and do your best to help them if they are loved ones.