That seems to be a trend these days. COD MWII is definitely playable, but has some major features missing. Crashing was normal for the first couple weeks. They will hopefully add the missing stuff soon and fix the crashing. Looks like they got it as good as they could, then devoted all their time to Warzone.
Go figure, the store is now up and running. So you can buy $24 operator skins.
Some of the DMZ Beta posts are pretty funny though. There's one gun blueprint (M13B) that you have to go to a lab, kill all the goons, make it out alive. Then you have to exfil from the map to keep the blueprint. People were ambushing at the exfil site and stealing the gun. It's not even that good of a gun.