Why is OW2's "ego" problem so prevalent?

Supports will blame anyone but themselves even if they're dying in the enemy backline once a minute as Moira, or failing to hit shots/cooldown management. They'll refuse heals of you use the "I need healing" ping.

Tanks will throw themselves into harms way and expect results, and if they die it's support diff. They'll refuse to take cover from high damage and expect supports to just keep them up and DPS to "actually do something"

DPS will fail a 1v2 or 2v2 and it's the Supports fault, or the tanks fault for not taking space.

Has anyone in the player base got an ounce of self critique? Can nobody sometimes look at their positioning, plays, aim or anything and say "yeah fair I couldve played that better".

It's getting intolerable at this point tbh, and the showing sign is that the first one to speak up on text chat is more often than not the problem.

Why has the game created such fragile egos?