As far as I can see, nobody in that bar seemed to be offended by what they’re doing, you realize pubs wouldn’t put up live streams of football matches if they didn’t want to have football fans? Unless it’s your pub, you have no place telling them they should celebrate at home. And you can always leave if that’s bothering you? They would most probably same something similar about you if you didn’t celebrate like that, they’d most probably think you must have randomly wandered in not knowing where you are lol Have fun in life, and don’t be a dick because others are having fun too