Plenty of games with anticheat have been pirated, like elden ring. I'm just saying that some devs might view not working on Linux as a feature not a bug, if they have the perception that a high proportion of Linux users are using repacks. There are some extremely vocal minorities in the FOSS world that could create that impression.
In any case, nice to see this dev look into the issue. I have my oldest boys using steam deck so the more compatibility the better.