There are so many people you just don't want to play with again. Why not let us tag players as toxic and change the game creation so you can get auto warned about players you have tagged as toxic so you can refuse the afk check if necessary.
One step further would be to select only to be matched in games with players who have been reported less than the worst 40%, e.g., or games. It should mean flamers will kerb their abusive chat because the better teamworking players will get less reports. Idiots report all the time but by making it the top 60% (or 75% say) or players who are reported least, the flamers will end up waiting longer for games and having to flame each other.