This argument is irrelevant in the end because trans women are women. Even if it were true that some trans women have a net advantage due to having gone through a male puberty, It's okay to have biological advantages in sports. That's kind of the point of sports, no? As long as they're taking hrt to get rid of the bulk of the advantages a male body brings I don't see what the issue is.

The second you exclude trans women, it is no longer a women's division.

I have seen this happen in real life. The vehicle was exactly what you would expect it would be