Lemmy is a free software, GNU (A)GPL makes no distinction between ideologies. Your “anti-capitalist space” is only in your head or at maximum on a few server instances.
Also Lemmy creator last time I looked was no socialist but die-hard tankie, listing Stalin and Castro as his recommended reading.
On the other hand Trump haven’t forbidden Ukraine to fight back on their own(yet). Which is what west did to Czechoslovakia.