The problem is that "anti-fascist" has been co-opted by Antifa [1] which have been designated as a terrorist organisation [2].

I think if it was "anti-communist"/"anti-marxist" it would be equally not appropriate for an OS.

[1] https://en.wikipedia.org/wiki/Antifa_(United_States)

[2] https://www.whitehouse.gov/presidential-actions/2025/09/desi...