This smacks of somebody looking for a problem. If it's not a problem when you don't look, and you have to go out of your way to look, how is it a problem?
Anything where your own way of seeing it creates the problem, and you can't describe the problem any other way, you're not ready to pitch it as a problem to other people. Find some harm independent of your perception, and then you've got a reason for people to listen.
They've explained why it's a problem. Having an alternative viewpoint on "why programs are randomly polluting my home folder, a sensitive location with my personal data, with unwanted files without leaving any trace of their origin" isn't going to help.
Anything where your own way of seeing it creates the problem, and you can't describe the problem any other way, you're not ready to pitch it as a problem to other people. Find some harm independent of your perception, and then you've got a reason for people to listen.