“People Make Games” have two videos on the topic where they also talked with the fired employees. They contain a bit more info than this bbc article:

www.youtube.com/watch?v=c9nOwjeznjI - The initial report

www.youtube.com/watch?v=8TvWNFBBwuY - A followup two weeks later about the messages that allegedly got them fired

But ultimately they can also just speculate and the courts will decide