"Trans men have male privilege, they just lack cis privilege"
Male privilege is predicated upon what the Patriarchy dictates as male. And I think this should be obvious, but The Patriarchy does not classify trans men as male. To lack cis privilege is synonymous with lacking male privilege, because The Patriarchy only considers perisex cis men to be male.
For trans men to have male privilege, the patriarchy would have to actively undermine its own principles regarding sex and gender. It would mean fundamentally extending personhood to those it and its proponents deem female, and it won't do that because the patriarchy needs those it deems female to not transition, same thing for those it deems male. Moreover, it would mean extending those it deems female agency over their own minds and bodies, and the patriarchy cannot work as intended if those who aren't cis men have autonomy.
Transitioning your gender in any capacity makes you an active threat to patriarchal power, and the patriarchy will not extend those people privilege of any kind.
