Either you're being sarcastic or have no idea how most MC's work, let alone a 1% club. Females are rarely full patch members of a MC and never of a 1%.
You've never seen a truly tough woman fight. The surviving members will patch her, and let her hang the testicles of the first ones who spoke against it off her handlebars.
It's not necessarily impolite to say, "this is our group, and we don't want just everyone to join us. I'm afraid we don't want you." There may be reasons for such. I don't take offense to the women of our church having female-only gatherings.
I don't mind them having the restriction, I just don't want to be coerced into paying anything for any club I'm not allowed to join, either through them receiving any sort of taxpayer funded benefits or regular financial support from an institution I pay for other services, such as a university charging all students a fee that goes to campus clubs and activities.
