YOu reading of that paragraph is moronic. Of course we might imagine life without any sexes as there are swathes of life that reproduce asexually. But when there are sexes, there are just two. You completely misunderstood what the authors were talking about.
That's a lot of words to say that you're mad because I proved you wrong.
You completely misunderstood. The paper is about why only two sexes evolved. Read the title for a start. If I am wrong, what is the paper about and what are its conclusions?
Sweetie, I just told you what it was about. I can't help it that your obsession on the idea that sex is binary has so addled your brain that you can't understand what something means.
Nowhere n that paper does it say more than two sexes have evolved. Or that sexes are not discrete. You are either stupid or dishonest.
Sweetie, your desperate attempts to use ad hominem attacks and invent things people never said are just continuing to prove you can't support your position. And you know it.