[CW: Discussions of Transphobia/Unsolicited Sexual Behavior]
A "leftist feminist" who disagreed with something I said accused me of having "male privilege" even though she knows I'm transfeminine. She said that "all male people have male privilege," with the term "male" there including transfeminine people. To do some harm reduction, she said "I didn't say anything about your gender, just your maleness."
What's really the kicker is that, even if you like to use this awful "sex and gender are different things" as a means of trying to have one foot on the transphobe side and another foot on the trans ally side, the idea of transfeminine people having male privilege from a systemic point of view is just deeply unserious.
I lost my family, got called queerphobic slurs by them in the process, dealt with extended periods of joblessness while also fearing the potentiality of being homeless with basically no support but Hexbear, and have gone through various other abuses because of my transfeminine identity, including uncomfortable sexual scenarios with men, and I have male privilege?
Well, let's not forget that she was also 
You know what this sounds like to me? The gender equivalent of bigots who pull the “the problem isn’t [insert ethnic minority] genetics, it’s [insert ethnic minority] culture.” Especially as they could’ve just gone with “well the experiences and perspectives of cisgendered women will be different from that of trans women/trans feminine” gambit instead of calling your gender identity into question.
What's funny is that my partner, who is a cis woman, agreed with what I said, but this transphobe conveniently neglected that because she saw an opportunity for misgendering me and accusing me of "male privilege" in the process.
Yeah that’s the problem with the privilege argument, it’s functionally saying “position X is not one people of my particular demo hold.” Which can easily backfire if a good faith member of the demo says otherwise.