I would not want to neither deal with security issues nor pay the data costs associated with some an app being able to connecting to my phone to download media

I believe you are mistaken, there is no way that reloading a tab from the web is faster than it being read from the disk.

Your OS should do this automatically, your programs shouldn't worry about cold memory.

The contradiction is in the claim that the vocal minority is significant. One could argue that the lack of mainstream distros not using systemd is an indicator of the lack of a significant population against it.

Are you aware that the majority of cpus sold today go to cloud computing? Believe it or not, but that is an application space with multiple users on the same machine.

In their defense there only so many big rivers, round there, and most do function as border