Most employees are dependant upon that job to maintain their income. And losing that income creates a big problem.
So there is a strong incentive to accept most things the employer wants to avoid being fired. Including spyware or tattleware or whatever.
Employees know that even though they hate being spied on, raising it as a serious issue risks losing their job. Or, they have heard other employees try and fail to get anywhere against a mandatory policy.
So if it seems to someone like there isn't a lot of pushback, that is a misleading statistic they have gathered.
https://en.wikipedia.org/wiki/Monument_to_the_Peaceful_Liber...