Most cis sportswomen have naturally elevated “masculine” hormones. Trans women see many physical changes (like fat redistribution and changes in muscle n fat mass) after commencing hormone therapy. Therefore, the “advantage” that they have over cis women is negligible. It is in fact comparable to the advantage that some cis women have over other cis women (the hormone thing that I mentioned in my first sentence).
But no, being assholes towards trans people is cool, and there clearly aren’t other issues to worry about. /s