I don't think people are complaining about one night out at a bar. I could be wrong, but it seems people are more upset at the overall behavior of these guys and being out at a bar until 2AM is just symptomatic of a bigger problem with them. Who's to say Beckett isn't out at a bar the night before his starts? His performance on the field certainly indicates that he's not taking care of himself.
I get defending his freedom to go out and have a few drinks, but I think you're missing the bigger point that people are upset about. We pay a lot of money to see games and subsidize his contract, I don't think it's unfair for people to question his behavior given his performance on the field.
Your point about it being symptomatic of a bigger problem is a good one. Your point about the money is not. No one is forced to subsidize anything. If this team pisses you off too much, stop buying tickets and watching NESN. I've definitely watched fewer games this year.
I think it can be called into question. If he is getting hammered 2 days before a start, it's going to dehydrate him pretty badly. Being that it's the dead of summer and how hot it is, it's not smart.
First, no one reported he was hammered so that's a big leap. Second, I have confidence that Beckett can recover from a hangover if he was hammered before his start two days later.
People are really looking for new things to get pissed off at here.