Companies fire people all the time, firing one person from Steam is a non story to me, firing the whole team would be a story. The spread was across different groups so it looks like some house cleaning, in a big company you often have clashes of personality or people who just can't cut it. Gabe mentioned in an address last month that they have to be aggressive about firing people, I suspect it is really easy for people to slack or go lonestar in that environment.
Playing: Dark Souls 2: Scholars of the First Sin Watching: Mr. Robot