Ttbh, I don't even mind how they gave the keys out. But what annoyed me was that they said it was for stress testing and then they do balance patches. So they randomly give out keys, from those random players they take feedback and then balance it based on that rather than giving keys who might actually be good at the game. TWI has a history of releasing well... unbalanced things in KF1 and tbh I don't trust them to pull another m99. Hell even the musket and auto bow are bad enough.
If they're taking feedback and messing about with balance, might as well just release EA once the stress test is done.