Were they 'into' it though, or did the nature of the secretarial work they were doing change? At least as I understand it, that was predominantly (of course there were exceptions, and female scientists, etc.!) the reason for the rise and fall of it.
I'm not arguing for or against '"Women don't really like this stuff"' - I'm just saying an example against it needs to be women liking this stuff, not merely doing this stuff.