Well I suppose he’s playable because it’s the beta season and:
“Players can earn Competitive Points similar to other competitive mini seasons and qualify for Top 500 Leaderboards during the beta season. However, beta season stats will only be available for a limited time and will not count toward a player’s permanent Competitive Season stats.”
https://news.blizzard.com/en-us/overwatch/23060961/introducing-role-queue
In theory that means anything you do now doesn’t really matter as the only permanent thing should be the gold weapon points you get from playing.
It might also be affecting your MMR as off-seasons used to do but… can’t really know without an official statement.