Tinkertons post was a somewhat good read, but it pretty much describing conditions that exist in every competitive game.
Tf2 give the exact same results. His claim that it doesn’t because the game is more visually “tidy”, is pretty much moot if you consider that TF2 too has ragers and rage moments.
While I won’t blame you for your reactions and I will too advise you to take a break (or stop playing OW entirely), do remember that dopamine rushes exist in the vast majority of competitive games.
OW is not different than them.
I hope you take the best choice for your being. After all, a game that doesn’t deliver fun for someone, is not worth playing by him. I wish you the best.