A "boys" club?
The headline implies that there is a filter on membership of the "club". Its fashionable to assert that every underrepresented minority is that way because the Pale, Male and Stale people somehow caused this.
In IT I am pretty sure this has never been the case. If it was, then with the positive actions being taken by businesses we would lately see more minorities involved in IT professions.
In my experience we have less women, in particular, in software development and technical team leading than we did in the middle of the 1980's.
An observation about the 1970's and 1980's: Because no one had an IT degree, and degrees were more optional, aptitude tests were made available to all staff who thought they might want to "go into computers". Those that did well were offered positions in Data Processing.
Yes, the data entry operators (Punchgirls!) were mainly women, but programmers and systems analysts could be anyone and were a pretty good mix.