There can only be generalizations to a point. Words mean what they mean. Look feminism up in the dictionary or wikipedia.

That's what feminism is and what it means.

There is some play there, but you can only bend things so far vefore they either break or become something else.

Regardless of how a certain person or people misuse the word for their own gain.

I can call myself a rocket scientist because I read a child's pamphlet on it or an auto/biography of Von Braun.

Does that make me a rocket scientist?

I can take a Ford logo and put it on a Wrangler. Does that make the Jeep a Ford?

I could glue an Ibex horn on a white horse and die it's mane and tail gold or pink. Douse it with glitter sprinkles. Does that make the horse a unicorn?

You've got to use some discernment here.

As an ideology, feminism is as open to misinterpretations, tangents, bad actors, corporate greed, and all other manner of corruption as any other ideology.

That's why no single one of us can solely speak for feminism or represent feminism. Not even Gloria Steinem.

If someone who says they're feminist says something that so far away from basic precepts of equality between the sexes and autonomy for women that it literally breaks the dictionary definition of feminism, then they are not representing feminism with those statements. Words mean what they mean. No more. No less.

They might also hold feminist beliefs. Hell they might even earnestly believe they are speaking feminism. But they're not. No matter what word they use as an identity marker.

Feminism isn't an identity. That's corporate shenanigans to make money.

You can't break the definition and hold true to the word. Doesn't work that way. It becomes something else. Otherwise, words are meaningless and we're all just grunting nonsense at each other.