Hard to tell what you mean.

Talking about feminists then "We are useful", I might assume you are a feminist, but switching between 1st and 3rd person.

Or, you say "We are useful by default" as if from the other perspective (i.e. mine). If so, hard to tell if you are responding to me specifically, or some "HN crowd" generally; in either case, yes, feminists have to prove themselves, or specifically their ideology. And no, I haven't said anything about "useful by default", that's your strawman.

I think you're being sarcastic, in which case your whole post is just a bad-faith, low-effort dismissal. It'd be useful if you'd respond less cryptically.

It is important to explain carefully to feminists exactly what measure of feminism they can actually maintain as satisfactory.

Hmm, sorry, are you talking to me?

None of what you say follows from my post at all. Unless you think "responding cryptically" is a form of feminism.

It's required by emancipation. Men who didn't prove themselves are useless too. And not only through words, but deeds too.