It was always a tankie den. The Lemmy developers are very openly tankies.
They held their heads relatively low during the whole Reddit exodus, but that's about it.
Here are some examples: https://raddle.me/f/lobby/159606/is-lemmy-still-a-tankie-platform-or-are-there-actual
The part where they say that using Linux instead of Windows is like leaving the US for Canada when Trump gets elected, and apparently it's bad because it means you don't help improve things for Windows (lol).
I know it sounds just like a joke, but it isn't. Tim Sweeney is really such a moron. Source: https://twitter.com/timsweeneyepic/status/964284402741149698