This whole issue makes no sense. The law protects women. A transgender woman is a biological man. They are allowing boys and men to compete against girls and women. You never see a problem with transgender men (biological women) competing, breaking records, and taking titles away from men, because men are bigger, stronger, and faster than women.
I do see a problem with (biological men) who are transgender competing with (biological females) in athletics for the very reasons you mentioned. I do not know how most Oregonians feel about transgender issues.
Oregon is a liberal state. Oregon Governor, Tina Kotek is a lesbian. Her wife is Oregon's first lady. Previous Oregon Governor, Kate Brown, is openly bisexual. It is clear most voters in Oregon are liberal and do not have issues with our leader’s sexual orientation.
Elsewhere. I just ran across this article regarding a transgender related appeals court ruling in West Virginia that you might be interested in reading. 'West Virginia transgender sports ban discriminates against teen athlete, appeals court says.'
https://apnews.com/article/west-virginia-transgender-sports-ban-ruling-badf5518ada74d01a3f0a0420d2f4074