If there’s a reliable way to only be alerted to specific activity, then the parents aren’t really actively spying, in the sense that the kids still have privacy when they aren’t transgressing into prohibited space. As long as that prohibited space is reasonable (huge debate possible there of course) and the kids know about the restrictions. imo
In private I bet most of these people don't talk about it at all. They probably don't actually have strong opinions on the subject one way or the other. They just use the hate to inflame their tool followers to keep themselves in their positions of wealth.
If there’s a reliable way to only be alerted to specific activity, then the parents aren’t really actively spying, in the sense that the kids still have privacy when they aren’t transgressing into prohibited space. As long as that prohibited space is reasonable (huge debate possible there of course) and the kids know about the restrictions. imo