The part you misunderstand is that social media is by and large a place people use to vent about their relationships. Especially women. And one of the problem women have is using things like twitter, facebook, or tinder to meet new men when they're looking for a relationship. Here's what happens:
Social media profiles tell people your appearance only. Men and women use this to pick out the most physically attractive people they can and try to form relationships based on that. It largely doesn't work because: A.) There is a constant implied intention that the suitor is pursuing (in this case, sex) because of the circumstances in which they're able to meet or B.) Men are more driven to seek relationships for sexual purposes than women, while women are more driven to seek relationships for companionship. The age of social media allows men to give interest to a woman from anywhere on the planet, and if after a couple of real dates sex still hasn't happened, men are free to drop their interest and pursue another woman. This puts pressure on women to have sex earlier and earlier as time goes on to the point where people really believe its healthy to have sex with someone within 1 week of seeing each other in the real world, which is actually quite laughable.
So how does this tie back to much older men seeking sex from much younger women? Men who are older have been around the block much more than women that are 5+ years younger than them. They will simply have more experience, and what it leads to is younger women falling into a false sense of security based on the manipulation tactics older men use get women naked. People often refer to this as "charm" or "flirting", but you would be surprised just how quickly new "couples" begin talking about children, a future home together, and just how much a new man will "provide" for a new woman initially through emotional support and constant food dates. What people don't like to acknowledge in this regard is biology.
The problem with this is that men within a 1-3 year age difference of women are likely to be less successful and have less power because they haven't been working on themselves as long. This makes women believe older = more mature and good-natured. And all of that talk men will do to women about children, a home, and incredibly attentive emotional support + attention upon first interacting? It sends women over the moon because of their inherit maternal instincts. (Please note, women in this regard must have clear interest in the man)
All of this leads (more often than not) to people being used for sex until they get tired of each other and break up which creates a cycle of relationships with incredible initial highs and horrible, shitty breakups that hurt for months or years and more relationships until you can finally settle.
The problem men have in relationships is that they often begin based on sex, and once you achieve sex it gradually becomes less interesting. The problem women have is that they're pulled into these relationships based on sex with their suitor giving them the world in attention, but once sex is achieved leads to decaying attentiveness and badly hurt feelings.
Aside from being pretty sexist this is a bunch of bullshit. Women don't believe older men are more mature based on the success of guys their own age, they believe that because of biology. Women have the biological instinct to be attracted to older men because from as every species of human evolved the older males had more experience hunting and were better able to provide for a family. While men have the instinct to be attracted to younger women because they are more fit and more capable of providing healthy children thus allowing the male to pass on his genes. This is the case with most mammals on earth.
Also as an FYI, research has shown that marriages where there is a ten year difference or more have a much lower divorce rate then the average three year difference. So the claim about these relationships not working out is just blatantly false.
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Now Playing: "The Hunt for the Two Missing Nintendo 64 Games" An expansion came out, but I'm still a third of the way through!