Yes, I agree that in the 1970's, sexism was much more "obvious" and direct than it might seem to be now. It's important to bear in mind the Sex Discrimination Act only passed in 1975. Also, there was alot less regard for child welfare and far less awareness of the impact of child sexual abuse and more emphasis on victim blaming and keeping things behind close doors. Perhaps we tend to think of the 70's as being a time of sexual liberation, but that doesn't mean it was a time of sexual equality.
Don't get me wrong - there were massive gains, some prompted by passing of the law, which tackled the worst examples of overt gender discrimination and helped improve the status of women in many areas. But, progress was slower on recognising gender-based violence and sexual violence generally as crimes and as socially unacceptable. In the 70's though, we kept many mentally ill, learning disabled and physically disabled people in institutions. Children's educational and economic futures were mapped out with a test when they were 11 years old. Few people batted an eyelid if someone got tanked up and got behind the wheel. Homosexuality was still a crime. Sexual harassment was just something that happened that you had to put up with. In alot of ways, both rights and responsibilities have improved since then, massively.
I also shudder when I think of some of my time as a volunteer youth worker - how we had no real training, no police checks, little real supervision, didn't do risk assessments, really winged it. I know sometimes it seems like we go overboard on some of these things today, but I know we took massive, massive risks back then and that wasn't good.
But, it's interesting that while there's been greater recognition (at least on the surface) of the harms of things like domestic violence, unequal pay, and child sexual abuse, there has been something of a "backlash," with the rise of other means of maintaining institutionalised misogyny.
The law put paid to alot of direct gender discrimination, but what it's not so good at dealing with is indirect, or institutionalised discrimination. That's harder to put your finger on. For example, going to strip clubs as corporate "entertainment," isn't the same as saying "we don't want women in management," but if women don't take part, they aren't likely to make the connections to get business/get promoted.
And, perhaps the next step in that backlash against the gains of women in society is promoting the idea that women "choose" to do things that ostensibly might be harmful to them. Millions of marketing pounds are put into pushing women to make these kind of "choices" (e.g. dieting, cosmetic surgery, accepting sexualisation and objectification, expensive cosmetics, etc.), but when anyone tries to call out the sexism and harm to women, up comes the cry that you're trying to prevent people from making choices, yada yada yada.