Depends on your definition of "biological male" and why you think there should be divisions labeled "women".
Sure. I mean, if you redefine "biological male" to mean nothing at all, and you redefine "women" to be "non-men", sure, no divisions are needed. As long as females don't matter to you as being independent entities of their own, rather than being defined as Adam's Rib, sure, no problem.
**** those females, they don't matter. Who do they think they are wanting to take part in society, economics, politics, and sports! Females just aren't suited for that, they should just stick to things that females are good at, and we'll let males do all the other stuff.
It's all fine and dandy to take some academic concept of hypothetical equality and run with it. It's another thing altogether to ignore the actual real-world implications of those concept and pretend that your "make everything equal" does anything other than
enforce inequality.
Tell you what, since you seem to think that sex is irrelevant and shouldn't matter, and that sports etc. should not be separated on the basis of sex, and that it should totally just be "whoever wins"...
Can you make a coherent argument for why we should allow sports (or anything else) to be separated on the basis of age? Can you provide a reason why we should allow 30 year old males to compete in Little League?