Big Free to Be You and Me fan here.
Grew up with it and now sing with my dd nearly every day.
Still vividly remember in third grade when I was in my classroom's listening center, listening to William's Doll. I had the lyrics memorized and, in my own world with headphones on, was unknowingly belting out the song for the entire class to hear. One of my more embarrassing moments.
But I digress.
I wish it wasn't relevant anymore. But it is.....big time. As much as I'd like to wish that our society has moved beyond concepts such as gender discrimination and sissiness, the reality is that it's still out there and our kids will be exposed to it whether we like it or not. Might as well arm them now with the knowledge and strength to combat these silly ideas and maybe, just maybe, enlighten some others. My dd, who is now just 12 months and happens to prefer balls to dolls, may turn out to be a tomboy or a girly girl......timid or assertive.....straight or gay......makes no diff to me or dh....but, sadly, it will to some.
Maybe I see it more because I have a bald baby and people can't tell right away if she's a boy or a girl. It is often the clothes or the toy she is holding that makes them decide one way or the other. The other day my dd had on a shirt with a picture of a baby surfing, and a lady stopped and said, "I was wondering if your baby was a boy or a girl, but now I can see he's a boy because of what he's wearing." It really doesn't offend me one bit, but at the same time it show me what assumptions people are making. These concepts are so deeply ingrained in our society that people apply them often without even realizing it. I have seen it over and over again as an elementary school teacher as well.
So, I think it's not only still relevant but just as powerful as it was in 1974!
P.S. I highly recommend the book as well!