Cricket is full of arrogant players, but where would sport be if they were all goody-goody cricketers? I've always been fond of a player that would stand up and say "We're good, and we'll win!" instead of the "Oh I don't know I think we are going to need to do this, and do that but maybe we can win, we'll see how we go."
You have to back yourself and your team, imagine a sport where all the players were robots and all spoke the same way, acted the same, and played the same? It'd be boring as bat ****.
Yes, we have arrogant cricketers, but if you said that there was a team that didn't have a few, you'd get laughed at.