Do you recognize how horrible attitude this is?
You sign up to play Football (Soccer) and instead of kicking the ball, you pick it up and smash people on your way as if you were playing Rugby. Different rules make different sports. If Overwatch is about switching heroes to adjust to map, situation and enemy team; then you are supposed to do it. Refusing to do it, you are not playing it right and of course other players are going to call you out.
Problem is Video Games support this fucked up attitude with the easy way out. You ruin one game? No problem mate! Just press this button and join another one and maybe enemy team will be even worse than yours or your team mates will actually carry you to victory, giving you false idea of how good you are. Players will start to call you out? No worries, here is an ignore button for you.
I mean, if this happened on a playground with friends who want to play Football and with you playing Rugby instead, they would kick you out and never invite you again.
I don't even play this game, but this attitude across ALL online games just pisses me off. You don't have to be competitive, but at least try.