Thanks Madame Z. Your candidness is not only refreshing but also very thought provoking.
Guys will know that there is a difference between jacking a load of your mind and cumming during great sex. Most guys, I imagine, learn to ejaculate through masterbation. This leaves us with associations which in turn cause the almost universal desire for a "tight" vagina. The tight vagina achieves the same as our hands - how many guys masterbate with a very loose grip? Someone somewhere I am sure but not many, and most men never really explore the potential alternatives to achieve either orgasm or ejaculation.
Many women love to get us to the point of begging for release - they will have nibbled, sucked, muzzled rubbed, taken our balls in their mouths - but when it comes to us cumming (sorry) you generally have to take things in hand or your vaginas or persed lips to get that grip.
So, we probably don't think about the length/depth issue for our own pleasure unless we are too long which restricts our thrusts or causes pain to your partner generally.
So yes, I can see that you would say that guys with short but reasonably good girth can still get off. The correlation is more for guys with thin cocks who won't get that grip on their cocks. And this is unsatisfying (I'm sure for both, unless they are very long, then they would be great for you). I can understand why this leaves guys with both reduced libido and erectile problems when in relationships with partners who are too loose for them.
What I find really thought provoking is the potential difficulties in achieving compatability. So far my understanding is that some women can achieve vaginal orgasm with any cock, a greater number with a sizeable cock, but the greatest number don't. The myth of the need for a sizeable cock being required sticks because enough women achieve orgasm because of this, rather like the myth of the big black cock, because enough black guys do have big cocks for this also to stick. But neither it seems is enough for it to be universally true and the fact that around 80% of women report that they do not have vaginal orgasms now suggests to me that for many it is not that they can't, rather that they have not found the right combinations from their partners, including cock size.
But, from Madame Z's experience you can see that the size can need to be very precise. Having an 8 x 6 is not a guarantee because a 4.5 x 9 would be much better for some and 5 x 7 for others.
So where does this leave us people?
Its certainly easier for guys to compromise as we only need the tightness, but the ladies can need an almost infinite number of variations, which is probably why most women aren't having vaginal orgasms but see that most other women don't either, so can live with it being a myth of some type.