Oh, no offense taken, if My speech was dramatic, it's because I am a dramatic individual.

Now, science does still apply within an antirealist framework, and there are various ways to demonstrate that particular subjectivities are erroneous. For example, the principle of contradiction. Imagine someone says "I believe in science" and also "climate change is a conspiracy created by lizard people to hide the flat earth". We can spot a contradiction there, which indicates this person's worldview is bollocks. They have created a bad subjective world.

Anarcho-antirealists certainly believe in good and bad subjective worlds. "It's subjective" doesn't mean "everything is valid", it means "more than one thing is valid". I certainly think any subjective world that leads people to believe in fascism is a shit subjective world. In fact, I have subjectively and arbitrarily decided that ethnic cleansing is axiomatically bad, based on no particular evidence that the universe has any objective goods or bads. Nonetheless, I strongly believe it is a moral good to enforce this subjective opinion, by punching people who believe in ethnic cleansing. I want to punch Benny Netanyahu in the jaw, despite the fact that in his subjective world, YHWH promised him Palestine and said he can ethnically cleanse the Palestinians as much as he wants.

From a scientific point of view, all type of gender and sexualities exist in nature

Mmmmmmm... no. Millions of sexes exist in nature, but not all of them. You see, I believe in more than millions of genders. I believe in infinite valid genders. For example, I'm goddessgender. Goddesses are a thing that humans made up. Nonetheless, that is what I am. I have a femininity that is not womanhood; it's more divine in nature than womanly. My gender is a social construct based on social constructs. It's as fake as they come. It's also something I arrived at organically, by chasing My feelings of gender euphoria until I felt comfortable and confident in My identity. It's as true as they come. True and fake, at the same time. Artificial yet genuine. The answer to the paradox is that I Myself am a product of a particular set of cultures. Identity is a spook. Personhood is made up. The self is an illusion. And My gender is mythical. I have experienced ego death and now occupy the liminal space between life and death. I left reality and ceased to exist; dead. And then I came back. I am a ego-revenant, reanimated by an oath of vengeance against the world itself, as it is subjectively constructed by Capital.

So yeah. There's none of that in nature. Nothing about My identity is objective.