Not to powerlevel, but what do you have in common? I'm in my late 20s and 18 year old girls are just alien to me. We have nothing in common and I can't imagine relating to the zoomer generation and it makes me think I probably wont understand future generations either. While I may not get along with millenials we can atleast understand eachother, but I find other generations to be weird and don't get how people can date between generations.
My hypothesis is that some people just use the age stuff as an excuse because they are miserable. In Sweden refugees were fine, then Swedish men ignored Swedish women in favour of Thai women, suddenly they wanted a limit on the number of Thai women in Sweden and everyone had to be checked. I get sex tourism and mail brides exist and are bad, but it was clear the Swedish women were unhappy.
Another example is some news articles talking about how people should have an affair to feel young and sexy. Which would just destroy the relationship.
Feminists hate stay at home moms and motherhood in general. Now we have articles of feminists hating their childless status.
People saying you need to sleep around to "find yourself" instead of holding off sex. Then they cry about how romance is dead.
"Vanilla" sex is bad, you need to have some gross BDSM shit or else it's boring. Now more women complain about how fucked up some elements of their sex life are due to porn culture.
I think all of it is just miserable people who are trying to get others to be as miserable as them. Don't form meaningful relationships, make sex casual so it can't be romantic, having a family is bad working is better, expect people to love you despite rampant hypocrisy (MGTOW marry virgins only, but sleep around yourself), cheat on your partner because they are probably cheating on you, etc. The age gap just lets them see a happy couple and say they are only superficially happy due to one side abusing the other, therefore they are also miserable. You don't need to know about the people just they are age X and Y, therefore it's bad and their love is fake so you can feel better being lonely, childless and unable to enjoy sex unless you have crocodile clips on your junk.