That's bad too, but at least it's not right in my home folder! When I have to use Windows, I basically just avoid using Documents for files. (But my daily driver is an ancient version of OS X, which has ~/Library for these things.)
Oh, mac has the same issue and for the same reason: the same programs will create the same garbage.
~/Library also isn't something that is used to be; it was good idea, but mostly ignored. Basically similar idea as XDG_(CONFIG|CACHE|DATA)_DIR.
What's worst, is that many projects ignore any effort to move them to XDG schema. They take the approach, that they always did it this way, it works, so why changing it.
My home directory is much cleaner because I've made a concerted effort to keep it that way, in a couple of cases even recompiling software. I found this much more difficult on Linux.
Yes, this.
> Typical of our society, we want to make everything someone else's problem.
I don't think that's a fair analogy.
It's more like moving junk from the living room to the attic. I'd prefer to have a clean living room and a messy attic.