Yea, but they don't own the people that can walk off and make games elsewhere if they want, so it does matter what they think. Any hint of bs or un-freedoms from MS and some will leave. This whole deal is brand new and you're going to see that in the future anyways.
MS should be, roughly, hands off for now and let them do what they do.
They didn't walk off when BGS made Fallout 3
They didn't walk off when Obsidian made Fallout New Vegas
They didn't walk off when BGS created a new Studio to make TESO
They didn't walk off when BGS made Fallout 76
They didn't walk off when BGS made Starfield, a new IP that had nothing to do with anything any veteran on BGS had ever worked on, while Elder Scrolls, their Baby, had no development done for a decade.
Microsoft is their new Boss, if they want to work on Elder Scrolls or Fallout, they can just switch teams. Microsoft would allow it without a thought.
It is quite a silly thought that a massive amount of devs would protest and quit BGS/Microsoft because Microsoft lets them work on the IP they love, RIGHT NOW, instead of finishing a new Elder Scrolls game in 5-7 years and Fallout game in 10 to 14 years.