"its so hard being cis on tumblr" so is being trans on tumblr. getting harassed daily, being told to shut up or that you’re oversensitive when you point out cissexism and transphobia, being told you’re actually your assigned gender, death threats and slurs.
i don’t know why you think the majority of tumblr is actually accommodating of trans folk who aren’t perfect(read: quiet) little trans people. because it’s not. if we speak up about cissexism, we are written off as oversensitive, angry, or ‘looking for things to get angry about’.