Yes, that is my GitHub profile. I no longer host new projects there as of a couple years ago because I do not support the GitHub monoculture, but I do occasionally use it to send patches and file issues for projects hosted there.

I use my own server (running free software, of course) to host my source code now:

https://git.dthompson.us/

And I should add that I'm only human, imperfect. There are very few people that never use proprietary software. We all make compromises, myself included, but I do my best to use and promote free software and reject proprietary software as much as I can manage.