Police can deal with this. If you dont want to subject yourself to this stop streaming. Its hard to feel sympathetic to someone beholden to racist and sexist communities, who earn their income from such people who dictate that you exclude and discriminate against groups of people in order to push those ideals. Further, bending to their threats and wishes only strengthens their position, legitimizes it, and shows that such behavior has a tangible effect on how you want your streaming personalities to behave.
With regards to his relationship, if youre in a relationship with someone who can't handle online minor interaction with another woman youre in a toxic relationship as it is. That gets into abusive territory if you feel you cant interact with people from other groups because of your significant other. No, I'm not asking for him to be a hero for women's rights, that would be above and beyond what is expected of him, which is, be a decent human being and dont exclude people because of their gender.