A few things here:
1) Prize money does not have to be equal.
for example, Chicago open division gets $150k, wheelchair winner gets $25k, master winner gets $5000 and para winners get $1500. The thing here is that they give the same amount for men and women, So the complexity here is what do you do if you are a master non binary for example or wheelchair non binary or simply an open non binary. Solving that issue is beyond my SJW pay grade. Should prize money be equal between men and women in the first place (45% of participants in the open category are women so at least that’s pretty close to 50/50), so maybe it’s just that. I believe that 0.3% of the US population identify as non binary, so maybe the money split should be based on that. I’ll round it up to $500 for non binary winner (just a thought).
2) some good runners are non binary (Hiltz for example - no chance that they enter Chicago, but you know what I mean). What happens to them? Would they be a “fraud/cheat” if they try to enter the woman category to get more prize money? We know that they are non binary. Again I don’t have the solution to that.
The thing is that if you care enough to recognize non binaries as an actual category (not saying that you should or should not). You need to complete your thoughts and actions about the subject. Unfortunately there are ramifications and consequences whether you like it or not.