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Sort of a tangential example to how this kind of law works
Interstate highways (the ones that start with an I in front of the number) receive federal funding for upkeep.
As part of that, they generally can’t be toll roads, and rest stops can’t be commercialized- so no stores, restaurants, or gas stations (the idea being that the highways are supposed to be for everyone to use and rest stops shouldn’t be competing with local businesses)
There are exceptions for cases like the PA turnpike (I76) which was originally built before the interstate highway act and then later integrated into the interstate system. So they’re grandfathered in so they have tolls and commercialized rest stops because they already had them. (The tolls were also supposed to be temporary until the construction was paid off but that’s neither here nor there)
I think you’re going to get into some “no true Scotsman” territory here pretty quickly, there’s not exactly a worldwide organization that determines the “feminist agenda” or a universally agreed-upon checklist that determines that you are or aren’t a feminist if you check so many boxes. It’s going to depend a bit on who you are, where you come from, etc.
For example, if you come from some sort of backwards ultra-conservative Christian background, it might be fair to call you a feminist just because you think women should be allowed to wear pants instead of a dress, because in that context you are, even if most of the rest of the world has long-since moved past that stage of feminism.
I think most if not all TERFs probably hold some amount of views that could be called feminist from certain perspectives. Whether or not they mesh with any of the more mainstream views on feminism is a different matter entirely.
EDIT: to be clear, TERFs absolutely do not mesh with my idea of feminism, to me you’re way behind the curve on feminism if you’re not recognizing trans women as women.