Overwatch is the worst for this.
Game one: We absolutely steamroll and as tank I do more than both DPS players put together. Yay.
Game two: We get our asses kicked and some Ana who doesn’t know to switch or group up when they’re getting dived spends the whole endgame screaming how awful our tank is.
No, it’s complaining about how some games are so swingy that even with skill-based matchmaking the game always seems to be a landslide in one direction or the other.