The first possibility, that of inaccurate reporting, is
always likely. If that turns out not to be the case, the next most likely possibility is probably
not that these brilliant people who are paid extravagantly to create and maintain a wide array of popular products and services are "totally unreasonable". I would suggest that they might have a different cultural understanding of workplace privacy norms. Their different understanding might be "wrong" in a universal sense, but it isn't for that reason unreasonable.
For many years the narrative of this organization has been one of openness; more recent events have proved that narrative false. As in many large organizations that consume vast resources, secrets are vitally important, but of equally vital importance is that most people have little access to those secrets. Google was in a bit of an odd spot with respect to this topic, however. If googlers had realized that they were excluded from important organizational information, they might have felt empathy for the rest of humanity. If that had happened, they'd have been much less effective at building all those spy tools. Instead, upper management pretended that humanity wouldn't need secrets anymore, and Google would show them the way to the future. People in their twenties who hadn't read much history and were being paid vast sums could believe that. Hell, lots of people outside the organization, many of whom were neither ignorant of history nor paid vast sums, believed that. People who believed in that openness would just expect that everyone's work schedule, and lots of other information besides, would be online so that all their coworkers could effectively coordinate. If a problem arose in the midst of all that openness, well, it would just be solved with more openness.
Now we remember that knowledge is not a symmetric relation. Just because Bob might be stalking Alice in HR, that doesn't mean she has any idea who Bob is. Just because Google knows what I think and do all day long, doesn't mean I know what Google is thinking and doing. Having built the microscope, the engineers have realized they're also on the slide. Eventually they'll either resign themselves to the arrangement, or they'll quit. Either way, Google will soon be the sort of organization in which traditional norms of workplace privacy dominate. (Hint: they'll stop Bob the programmer from stalking you. Larry, though? He's exempt from that.)