There are many studies you can point to for either argument, though to go study vs study is to get nowhere; ask yourself why you would think women have to have a division in the first place.
Ask yourself, now, why you believe a transperson, someone who likely has undergone hormonal procedures, should not be included in the division of their gender.
I encourage you to say as you think. Lets not tiptoe around the blatant sexism and phobia rooted in the opposition to this belief. This is, at the end of the day, an issue with the way which things in the sports world are handled and classified rather than an issue with individuals.
היה הראשון לענות הֶסכֵּם זה.