I think there are groups of blokes that behave like this, yes, especially in certain environments. Luckily, to the best of my knowledge, I'm not acquianted with any of them.
They like playing to an audience as is probably clear from that clip and they seemed equally bad to me (don't know the other bloke but Jimmy Bullard has always come across as a bit of a knob). It's wannabe alpha male posturing - real alpha males don't need to do it .
They don't need to, but it doesn't take much for pack mentality to come forward
Just banter nothing more, it was probably a bit over the top but two men will keep going unless one objects or it ends in physical, that is the nature of banter if you're a sportsman, trying to stop it is pretty pointless, its not healthy but it happens and is fun too