The issue with this argument is HRT in trans women after 2 years reduces muscle and bone density down to the levels within the average ranges of cis women... Removing the "biological advantage". This is widely studied and recognised in science, and it's not even new science...

It's the constant intake of the higher testosterone levels that causes the increased baseline strength which lowers as the hormone does. HRT for Trans Women includes both Androgen blockers (blocks testosterone) and estrogen to fill its place. Hence "hormone replacement therapy"

I'd say it's less "being honest" and more than most people are ignorant (accidentally or maliciously) to just how much HRT affects the body and how it affects the body... Just like how trans men significantly gain baseline strength over 1-2 years into HRT

Which is exactly why sports organisations like the Olympics (before Trump pressured them to drop trans people) required a set amount of time of HRT medical history and blood tests to check hormone levels are in average cis women ranges to allow trans people to take part.

But if you believe the people on the right demanding the erasure of trans people, you'd assume it's just "men with the biological advantages dunking on women" while ignoring all effects the body undergoes. Which then allows the constant attacking of trans people for simply existing (even though majority trans people aren't even trying to get into professional sports... But that doesn't make for a "good" news story or political point scoring when fighting to demonise trans people...)

In theory.

But thankfully in this one instance it actually worked.