I'm sorry you're gonna need to provide a bit more citation on these.

• Biological sex exists

What do you mean by this?

Biological sex - as in physiological characteristics borne of sex chromosome differentiation - is absolutely real, and playing about with that could quite literally get you killed from a medical care perspective (as in wrong dose of drugs, etc.).

Now if you want to discuss whether sex is truly binary, that's much more debatable - especially due to the existence of intersex people, and those with sex-related chrosomal disorders.

• 99.99% of your body isn't empty space

If you're talking about atoms in the body being 99.99% empty space, then by that technicality everything that exists is 99.99% empty space... Which isn't so much an interesting lie, as it is just an interesting physics fact.

• Objects exist

I'm not calling this one out, I just want to know what technicality this is borne out of.

• The Beatles were any good

This one's just offensive. Or that is what I would say if I didn't also think they're a bit overrated.