I just published my first article to the Fosstodon Hub community blog - Do you have to use an Open Source OS to be a FOSS contributor?
If you're interested in contributing to the community blog, take a look here - https://hub.fosstodon.org/about
@kev Nicely said. I, personally, run macOS on most of my machines but Linux on as much infrastructure as I can muster.
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.