Part of my point is that you can not know that by looking at the outcome. That is, it is not clear that the ratio of males to females says that either is being excluded.
> So it would be far fetched to claim that the effect of these programs that encourage women to participate has denied a significant number of men to enter into these fields.
This is a claim that nobody is making. The claim that can be made is that no equivalent effort is made to include men. That is, there is more opportunity for women, but still fewer women ultimately participate.
> I would be interested in some concrete facts on just how many of these programs even exist and the monetary expenditure of such programs. As someone from generation X, I know that no such programs existed at that time.
If you have had any connection to an HR department at a typical North American company in the 2010s, you would know that programs to specifically recruit men are effectively nonexistent; so it doesn't much matter what the specific measurements for the female recruitment programs are, because no matter how much or how little the investment, it is infinitely more than no investment whatsoever.