I can totally see it happening. Everyone there seems to be worked well beyond reasonable limits. Some people who would otherwise think before they speak don't really have time to pay attention to what they are doing outside of trying to get content and edits out the door.
I think there was favouritism and misogyny, and senior management were definitely treating this person poorly and singling them out for "causing drama".
Others in the company were too overworked probably to notice, stop and support this person as well. I feel terribly sorry for them, but I can't help but think that if they'd loosened up on the pace of getting content done, if they might have been able to address it better on the whole without subjecting the person through all that trouble.
I almost want to believe that it's some kind of coordinated attack to stop them from building the testing facilities, because big tech doesn't want independent data to be gathered.
Unfortunately, the truth is almost certainly way simpler, rich tech bros being rich tech bros.