Cis people to cis men: Here's a long list of arbitrary things that if you do, you are not a man. Cis people to trans women: Nothing you do will make you stop being a man.
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Nothing about the various combinations of X and Y chromosomes makes anyone better or worse at activities, precludes specific fashion, hair growth and styles, manner of speech, adeptness at parenting, strength, job skills, or anything else that cultures use to define genders.
Well, if you have the X-Man gene on the 23rd chromosome it might :P But yeah, you're absolutely right.