My mom's husband might be braindead thanks to alcohol consequences

So life happens fast. I currently live with my mom and her second husband. Husband is an unrepentant alcohol enthusiast: he necks malt liquor day and night. I posted here a few months ago about him having a cardiac scare that inspired him to taper down. He did. Then he started drinking malt liquor again.

He and my mom were on furlough for the month of August. This meant, of course, that he was drinking all day every day with no interruptions for a month straight.

They started work again on Monday. He doesn't drink at work. He went to work without a morning drink. That afternoon, he had a seizure on the warehouse floor and hit his head so hard against the concrete that he partially fractured his skull.

He is now intubated, unresponsive, and there seems to be no improvement in his brain swelling or internal bleeding. He's currently just a sack of meat taking in hospital slurry nutrients in various horrifying tubes and a litany of Really Good Drugs keeping him sedated and calm. My Mom is absolutely devastated and it's breaking my heart.

Booze sucks.