Everybody praise TOS for it's gender depiction and the pilot with Chapel as first officer is always cited. I'm in the process of finally watching all of TOS (around S02e05), and it does not seems that much progressive to me.
The first season Yeoman is a poor little creature and Spock almost say that she must have enjoyed the rape attempt of evil Kirk. Every face close up of female character use some kind of glossy shot "look how she is gorgeous". Kirk is annoyed that if Scotty manage to seduce a female officer he will lose her to marital life. In the same episode, the dynamic between Scotty Apollo and her depict her as submissive to whoever claims her.
Female are officers of the enterprise but they are second class officers that always turn to men for help.
Let's compare that to the UK TV show the avengers, where Emma Peel is a strong female character that is a way more liberated female character than Uhura.
I really enjoy Star Trek, but we do not need to make it look like the ultimate humanist beacon of the 60's.
And let's not talk about Kirk and the teenage girl in the Miri episode...