Yes there will be odd women who miss out on a place or a medal and this will feel unfair to them but for every athletes who makes it to the Olympics there are 10 who just missed out for all sorts of reasons but I would be really surprised if this specific reason becomes a serious threat to women's sport.
Some tired old trope rolled out here.
Some women will lose anyway.
But there is only a few so what does it matter.
‘No one is going to chop a leg off/simply declare themselves a women and lower testosterone for a short period of time to do this.’ (You do know being trans requires no extreme behaviour at all. It is not like chopping a leg off in any way and to use that example shows you have a phobic view of what being trans is).
Besides which, there are already transwomen dominating sports away from Olympic level. You completely miss the point that it only takes one male to dominate a sport. It only takes one male to set a record that may never beaten by a female. Like Maxine the woman of the year for Kent at county level. Setting records playing women’s cricket, with lighter and slower balls and bats and shorter boundaries all while still playing in the men’s team at the same time. Nothing to see here.
I am sure that when the now exGB junior male champion cyclist will have no impact at ALL on female cycling when they re enter GB cycling as a female after their time on testosterone has accrued. After all, they narrowly missed out on remaining on the GB male cycling team for this Olympics. There will be nothing to see here.
Caroline Layt won sportsperson of the year for New South Wales Rugby before acknowledging that they were a male. So nothing to see here.
Rachel MCKinnon (MNHQ I use that name because that was the name they won their races in) won in cycling at masters level. So nothing to see here.
The young male runners who have set the girl’s records in Connecticut (and did not have to lower testosterone at all due to age) and won the scholarships meant for progressing girls in education to overcome sexist discrimination experienced by females for millennia. So… nothing to see here.
The Canadian archer started shooting four years ago, is in their forties and started winning while representing Canada within two years. Was the only archer sent by Canada as a female archer. So… nothing to see here.
I can list more but I have illustrated my point. To you the women missing out are acceptable collateral damage for inclusion.
Males can still compete with males!!! Females cannot fairly compete in the male sports category, and it is at times unsafe.
It only take ONE male on a team, at regional level, at country level to dominate that sport at that level.
Good that you feel girl’s and women’s economic and educational futures are expendable in this way though.