Because this feature is fundamentally opposed to a very large part of why the game is fun to begin with. It's like asking to start death stranding with a super atv with infinite storage. Its even worse because it affects other players too.

It's possible this quarantines off the most boring players and let's low aggression lobbies shine (making emergent interaction a bigger part of the game than it currently is). It's just as possible that it forces everyone to pick between playing online single player or playing with deranged 4channers.