The online theology journal Homiletic and Pastoral Review has published an article of mine drawing on the FIUV Report which discusses the demographic profile of Traditional Mass congregations.
I have demonstrated that the association between the EF and young people and families is neither a myth nor something limited to certain countries. Most Catholics have never encountered the EF, but of those who do, mostly by chance, the ones who make it their preferred Form of Mass are disproportionately young, and include a disproportionate number of families with small children. The presence of numerous children at the typical EF celebration can be confirmed, indeed, by anyone willing to set foot in one, provided it is celebrated in a reasonably family-friendly time and place, and is reasonably well-established.
The place of migrants, and in general of people of mixed cultural and linguistic backgrounds, at the EF, can be seen, naturally, only in places where the local population includes them. Nevertheless it is very evident in cities such as London, and as indicated in the statements quoted above, can be found in many countries.
Easiest of all to confirm is the presence of men at the EF. With Ordinary Form congregations in many places being increasingly dominated by older women, the ability of the EF to retain at least equal numbers of men, as well as young people and those bringing up children, is of no small significance.