Because it spies on them and nags. But Windows itself already does that. LG could've done the same thing sans the mcafee popups and nobody would care, in fact Dell is probably doing that.
So once an person is victimized in this way, it becomes a free-for-all where future transgressions cease to matter?
Neato.
I don't expect software engineers to build stuff like this. I expect humans to treat other humans with dignity and respect. In fact, it makes me extremely angry when I see people do it, or advocate that others should tolerate it.