Again, the vast majority of the 150,000 are not R&D and don't really have anything to do with product development to even matter.
Yammer, Satyas QnA - which I'm glad you mentioned because organized groups send a representative every time to talk about government contracts - quarterly all hands, etc. Not to mention the Surface/Hololens org, the org responsible for the tech, holds all hands for their teams very frequently. Sometimes, your org head could be sharing your floor, they don't have special offices.
No one's voice is suppressed and no one is being meek, I don't even know how leadership would be able to control that anyway. The simple facts are - 1) there's a small coalition of employees who feel one way about it, 2) not all concerns raised are valid ones and has a need to be addressed - because frankly, it's really a good thing leadership can stand their ground and not sway on the voices of a few employees, no? The proactive action being taken here is the ability to stick with a common sense perspective, not proactively fire your employees for saying mean things about their employer.