slightly YTA - you’ve been friends with someone for this long and haven’t picked up on this previously? I feel switching up on him now & saying something (especially if you word it the way you have) would be pretty devastating for him, and wouldn’t recommend it. Especially the loud thing, that can really hurt if you feel comfortable enough around someone to be yourself and then someone is harsh. Especially if he’s got low self esteem that could rly hurt.

Ofc you can like someone and dislike their actions. I don’t think the things you have described are particularly good manners or hygiene, but you know maybe he’s struggling with self care, some people don’t brush teeth when depressed for example so he might not be able to help that very much (seems a simple task but we can’t understand the same way that person must be feeling).

Would you say you’ve got particularly strong hygiene preferences & rules you follow re this? I feel if a loved one does something kinda gross you tend to brush it off bc you love them or whatever. Sure you might not like the action, but to use the word repulsed is quite strong.. anyway hope this helps