I think it's your T you need to have this conversation with. I'm not trying to tell you what the reality is. I don't doubt that you are good at your job, and she wouldn't want to hire you if you weren't. I have worked with various nonprofits and other do-gooders for around thirty years, including sitting on boards, and I've personally seen a lot of dysfunction in hiring, promoting, and firing practices that has a lot to do with social relationships and less to do with work per se. It's possible that the fact that you are willing to go drinking after work is a factor that encourages her endorsement of you. It doesn't take away from your competence. But if you think in some way that your drinking is positive for your working life (which could be what you are really saying in all this stuff), then understanding your beliefs about this is all good stuff to discuss with T. Her comment seems to challenge your belief that your drinking is not a problem in a different way, so it seems to me that it's all part of the same thing.