Since when kicking people to their poor performance ever a thing? Since ever... The only thing the parser will show is concrete numbers, rather than visually seeing their performance. Hell, most PF are already excluding BRD and MCH in the group lol, before even kicking them due to their low numbers, they're not even included.

The "abuse" you claim was never about abuse. If a DD can't output dmg to surpass DPS Check phases, then he/she deserves the boot. If a tank/healer can't perform to where they keep the party alive, then they deserve the boot. This concept was never new... why get butthurt about it now?