Hey, I am all about that snark.
Getting serious for a minute, almost all of my female friends immediately view dudes who have come out as bi as, well, less of a man, irregardless of anything else.
Thinking about it, the ones who didn't were bi themselves.
Whether that counts as toxic femininity, or whether a label like that even counts for anything outside of TERF circles and the like, or is merely a reflection of toxic masculinity is for other, more serious posters to discuss.