Linux is at least mentioned.
Over the next few months, we’ll enhance the app further by adding more new features and releasing the Software Development Kit (SDK) that the new macOS app is based on, which we anticipate will serve as the basis for a highly requested Linux app.
Can we please just leave the culture war nonsense to reddit? There is no grand conspiracy to "hide" this game.
This video covers the topic quite well: https://youtu.be/WPsSguYNHpk