There’s quite a lot of programs that make use of XDG_CONFIG, with the default set to .config in most distros. However, there’s also quite a few programs that have rejected this, sticking with a format that is not XDG-conforming.
One such example is OpenSSH, as can be seen in the following page - it makes use of the ~/.ssh directory. Why is that OpenSSH does not conform to this specification? Are there any security vulnerabilities? If so, then shouldn’t there be another specification by Freedesktop.org, which allots a secure directory for the same?
Other than declutter and conformity (which are good goals in general) what else are you getting here? What would you be able to do tomorrow if they suddenly supported XDG_CONFIG that the general population would benefit from?
Honestly, I do not have any strong points, because XDG makes the home directory look clean, but I imagine alternative SSH libraries offer this freedom of choice? Maybe the Guille-SSH? But then again, it’s just one extra folder on my personal device, so I don’t really have a lot of complaints, and I don’t really want to use a project that is not tried and tested, at least for now.