You can understand rival fans being annoyed at Martin Odegaard taking a picture of a club photographer who has spent his entire life backing the Gunners and poured most of his energy into recording their journey. It's a truly horrible thing to see, and that kind of joy, ecstasy and sheer delight really has no place in the game.
True, Arsenal aren't exactly the most subtle side in the league when they pull off a big win, but it's not like they are the only team to make a big deal of victories - look at Newcastle's group shot after beating Sunderland less than a month ago.