I can't find the original excellent article I read, but here are a couple of other sources.

daily.jstor.org/how-computer...

www.npr.org/sections/mon...

projectf.com.au/the-f-word-b...

www.polygon.com/features/201...

That feeling is supported by data. 3 main reasons for it - when careers shift between "low skill" and "prestigious" the gender balance & pay flip (for the opposite see nurses), companies chose to market tech to boys in the 80s & a company did a profile of "ideal" coders that only looked at men.