Just to clarify, it is not just about "hidden" files looking good. There are many reasons one may want to move config/data/cache files to other locations, E.G. in my case I have a computer with home on a small partition that simply can't fit all the crap those misbehaving programs try to put there. I simply can't install Flatpacks on that machine because they obviously won't fit in a small home and can't be moved because of a maintainer who is very disrespectful to users (the bugs full with messages of users pleading for him to allow them to move apps to other partitions is disheartening).