I don't think she's saying she's marginalized because she's a well known researcher who people listen to, she's saying she's marginalized because one or more people, who have their identities concealed, asked her to retract a paper she already published via HR.
Granted, because the process she described is anonymous and opaque by design, it could have happened to other people at the company and only they, HR, and the people requesting/ordering the retraction would know about it. At the same time, if that's the case, then Google needs to stop that, because it looks really bad, especially when it involves a minority researcher who published a paper on how certain models Google uses may have some degree of discriminatory bias built into them.
Imagine this: You’ve sent a paper for feedback to 30+ researchers, you’re awaiting feedback from PR & Policy who you gave a heads up before you even wrote the work saying “we’re thinking of doing this”, working on a revision plan figuring out how to address different feedback from people, haven’t heard from PR & Policy besides them asking you for updates (in 2 months). A week before you go out on vacation, you see a meeting pop up at 4:30pm PST on your calendar (this popped up at around 2pm). No one would tell you what the meeting was about in advance. Then in that meeting your manager’s manager tells you “it has been decided” that you need to retract this paper by next week, Nov. 27, the week when almost everyone would be out (and a date which has nothing to do with the conference process). You are not worth having any conversations about this, since you are not someone whose humanity (let alone expertise recognized by journalists, governments, scientists, civic organizations such as the electronic frontiers foundation etc) is acknowledged or valued in this company.
Then, you ask for more information. What specific feedback exists? Who is it coming from? Why now? Why not before? Can you go back and forth with anyone? Can you understand what exactly is problematic and what can be changed?
And you are told after a while, that your manager can read you a privileged and confidential document and you’re not supposed to even know who contributed to this document, who wrote this feedback, what process was followed or anything. You write a detailed document discussing whatever pieces of feedback you can find, asking for questions and clarifications, and it is completely ignored. And you’re met with, once again, an order to retract the paper with no engagement whatsoever.
Jeff Dean's response about mitigations being made to minimize the issues she highlighted could be justified too, but again, because the process she described is opaque, no one external to the process has any idea about the merits of the arguments raised.