Would you like an in-game parser?

[ChrisRedfield2]

Why the hell would you get a permanent ban for telling someone they are underperforming ?

Because they want this game to cater to carebears

[VelKallor]

Because they want this game to cater to carebears

SE is well aware of the potential for abuse and misuse, as it has been elsewhere, so with that example in mind, the devs have chosen not to give players excuses for, or to enable, toxic behaviour.