I cant see how people use the net without it.. My wife gets all these ad popups and she is so use to it that it doesn't even register until I point it out.

Honestly, ublock isn't even enough anymore. DNS sinkholes are the next layer, since they work device-wide. I use nextdns.io, and it's good enough that I just keep ublock around in case I need to disable nextdns for some reason.

uBlock Origin does not protect you from this, this is a fingerprinting problem. You need to use a fingerprinting resistant browser. And even then, there are new fingerprinting methods emerging frequently and you can't prevent fingerprinting from inside apps on android/iOs..

Most slop mobile applications, that many people have on their phones are basically spyware pretending to be games/whatever.

Programatic advertising technology was created for intelligence purposes, these companies and their methods are very sophisticated.