a couple of points here.

i've seen interviews with both jon and richie who say theyve lost touch with him and sound genuinely disappointed when talking about the whole situation.

hugh's a session player who looks at things from a different perspective from other muso's meaning playing for the song is more important to him than dancing around and he'll realise that jon and richie are the focus f the band liuve and have been for 2 decades so he doesn't need to or shouldn't get in on the act if he doesn't need to.

going onstage drunk is ok if u can pull it off, some can, some can't and sometimes ur just lucky. ive went onstage after stanking a case of cider with our bass player and we both played brilliantly evenm though we couldn't stand straight if our lives depended on it. alec by the sound of it wasn't so lucky and if u'd rather drink and play shit than stay sober till u come offstage then u shouldnt be in a band. u've got an obligition not only to the band but to the people seeing you, that they will get a good show and if u know that drinking ****s u up onstage then u don't do it.

either way the dude had/has a drink problem and rock band or not, that's never something to be proud of or for people to look upto.