You've put it on a forge with issues and PRs open, which implies you expect external contributions.

I'm trying to warn you about the implicit message your copy sends.

It will chase away the folks I mentioned, and some day you'll discover that one of your non-political core contributors goes by @zyklon1488 on twitter.

>one of your non-political core contributors goes by @zyklon1488 on twitter

I think this is exactly what author meant? This is just a tool, private life or political opinions of contributors are not relevant, as long as they don't try to force them on other project members. The only thing that matters is the quality of submitted code.