If you have automatic updates on, and you should, then you need this if you also do not want to be upgraded to Windows 10. Again, you should turn on Automatic Updates if you don’t already - this is to keep you safe from severe bugs that allow attacks on your PC. When MS finds bugs, they fix them, and you need those…

I’m pretty sure you mean “not tech savvy” people, and this is not “helping them do stupid things,” it’s helping them maintain the system they have. No software company should force you into an upgrade this big. Bug fixes, sure, but big changes should announce themselves and ask permission.

Can you explain what you mean by “Chrome App window?”