Those people drinking beer in byu gear that would put a broad label on lds people that they are hypocrites. I work with plenty of ex members who hate the church because of the hypocrisy of the people. They claim they are righteous members but then they see them doing things contrary to the church. It's kinda lame but I've seen that mentality screw a lot of people up.
But we should definitely welcome all people into the byu fold (even the beer drinkers).