Being able to AFK out and have the spot backfield needs to remain. Just because giant babies use it to rage quit after the enemy team caps or turns a flag is no reason to punish the abandoned team.
However, the backfill switch needs to be turned off if the match has less than 2min left and certain resource/cap disparities are present.
For horde queues ranging from 10-20 min, it’s a massive waste of time to load into a game that’s officially lost, or worse, loading in to be greeted with the match recap window.