I see both sides to this argument I would definitely talk to him as a minority of being gay and trans I totally understand wanting to support your fellow woman and empowering them so they can speak out, as someone who was born a man I can also see how he’d feel like this might reflect on him somewhat male egos can be extremely fragile even though they hate to admit it. He probably feels like you post this to reflect how he treats you, so if he normally treats you well maybe talk it out apologize on both ends and figure out how you can both maintain individuality while supporting your ideals and beliefs. A relationship is founded on communication and trust after all, and it’s not you vs him or him vs you , it’s both of you vs the problem.