That's a horrible article full of nonsense!! : D
Well, it did only refer to research in certain urban areas of the USA, and who knows how people think there. ..
I do agree that there are no men on dating apps between about 28/9 and 45/6, apart from the odd straggler. I've deduced this is because it's the main age period for full nesting and child-rearing. Then people emerge back on to the stage post-break up and start miserably looking again in their 40s+, thinking wtf now nobody is going to want me.
My (not really very radical) take on the 'value' of women over 40 is that there is a cohort of way younger men, early 20s, who see the value of these women and know, of course, that they are told they are losing value by the month. But these are the mothers, aunts, teachers, etc, they've fantasised about from when they started thinking like that - these are adult women. So, especially with the opportunity for such easy boundary-crossing and communication that the internet affords, these guys are boldly approaching someone's mum. And, from what I've heard, and my own experience, this can be a very dynamic combination, and really extremely good for both parties.
I think women of that age, let's say who are now 'free' because of a long life relationship having ended, often find compartmentalising their life works better. They have kids, most likely higher secondary age or older, and who they bring home (if anyone at all) is a very tricky subject, as the kids are old enough to want to dictate, or at least approve, their mum's choice of partner. So she might choose to keep it totally separate and see someone on her own time, not even telling the kids. And this also suits young guys.
The issue of course comes when you want to find a new full life partner. You can't roll up with a 21 year old. So then you are left with the flotsam and jetsam of morose divorced guys who have watched really too much porn and can come across as a combination of needy and seedy. I feel for them, but they are not my type. I don't mean to generalise about any age group, and of course I do love and feel for everyone, but in terms of who I actually feel moved to lie next to, it seems to be someone who is forging his own path and could have whatever 18-25 year old girl he wants, but prefers me. Because why not? I do actually put my foot down at the idea that having lived more years has devalued me. Quite the opposite. I feel like it's only enhanced my charms.