How is my husband not embarrassed of his best friend?

My husband's best friend survived being shot in the face and now he's crashing out online. His best friend is already the worst. He's a serial cheater and almost proud that he's a serial cheater. Severe trauma dumper when he's drunk and now acting like he's some God because he survived getting shot in the face. He's just been on tiktok lip syncing to a lot of falling in reverse songs acting weird and showing off his bullet wound. And all my husband has done was smoke weed with him to get him to chill tf out. I don't get how he can be friends with this person and not be embarrassed 🙄

Edit: Sure I'm a bad person but the guy serial cheating and crashing out online isn't 🤣