cut off my longtime friend because he became an abuser

I met my buddy online something like 6+years ago ago right after I got out of high school. It was the first and frankly only person I’ve connected to on the same level. Just always comfortable with each other, we made youtube videos together, we watched all the same cartoons (stuff i know barely anyones watches) and discovered most of our taste together. He was always just fairly normal like me (atleast compared to where he went) but he kept saying more and more unhinged shit. It was pretty much directly after kanye became a nazi, at first he hated it, then a year later he agreed with kanye and he fell into this weird “blackpill” space where he was always surrounded by racists and sexists. Non stop. If he was around them, I was gone.

Then he started drinking. He started beating his girlfriends more and more often and blamed it on the drinking. I stayed because I had this weird idea that I could get him away from his crazy ass girlfriends and in denial about him being crazy. A few months ago his mom called me just balling her eyes because he was drinking and he choked her to the point she could barely breath when she was on the phone with me. I really tried telling him hes a gigantic dumbass who needs to stop, but he didnt really seem to care. A week later after ignoring him, I called him and told him i was cutting him off. He said he wasnt gonna drink any more and the only reason he hit his mom was because he was drinking. I said that wasnt an excuse and that hes fckin crazy. still really bitter i lost a friend and miss him all the time. but its not like i miss who he was when i lost him. I just miss the old him man. Luckily he hasn’t tried to contact me or anything because as he is now, good riddance.