Booze in the cockpit is bad. I get that.

Saying silly things on the PA system. Meh. If the comments were truly disrespectful or obscene I can see problems with that. If it was folks telling off-color jokes I'm not sure.

Climbing in the overheads (as long as the climber is within the weight limits) and running TP races are not bad, IMO. Sorry if others disagree, but I just don't see those things as a problem. For one thing, I've heard crews tell stories of doing the same for years. For another, the CO employees were the ones facilitating that behavior on the plane.

And I wonder the purpose of starting this thread, but that's a whole different thought cycle.