Is it really an anything goes clubhouse? I seriously doubt the players are popping brewskies and snorting coke off of prostitutes or something of that sort.
If the necessary preparation is happening away from game time, then I really don't see why it's worth expending any energy into policing what grown men do in the dugout. There have been goofy players doing silly stuff in the dugout as long as I can remember with a steady stream of pranks like gum on hats and the likes. It seriously fees like people are offended by people having fun and looking happy. I get it that as fans it's frustrating when your team is losing, but I can't wrap my brain around why fans think that players need to act like mopey goth girls when the team is losing, can't put on a home run jacket when the team is losing etc. There are already too many stupid f***ing unwritten rules in baseball that largely revolve around not being allowed to have fun/celebrate during a game, and I for one don't want a team to start worrying about implementing even more of them. Sorry guys, no home run jacket, we have an unwritten rule that you can only wear it if a home run puts you ahead. Sorry guys, no more Spanish speaking players sitting together at the end of the bench, that's also against the unwritten rules because you guys looking too happy offends people. Most of this criticism that gets put forth towards players celebrating and having fun really seems to stem from people who need to loosen the f*** up.
For what it's worth the worst offender when it came to lack of focus/effort on the field was traded to the Mariners. There's still a few other issues to be resolved like watching potential home runs bounce off of the wall and the likes, but for the most part this team tends to put in a solid effort on the field.