When I was 28-30 I did a lot of dating. I went on a few dates with people 22 and under early on. I quickly set my personal age limit to 25, as everybody I went out with younger than that displayed waaaay too many undesirable traits in maturity and lack of life experiences.

This "wisdom", while amusing, just doesn't work. And still puts young people in danger of being groomed by assholes.

Assuming hetero coupling: I don’t know why a 27yo woman would want to be with a 40yo man if we’re strictly talking about biological fitness of offspring. Makes more sense for a 17yo and 20yo, but there are serious diminishing returns for a young woman the older the man gets based on the decline in sperm quality. The chances are that she ensures better offspring by being with someone in her age range +/- 3 years.

FYI, this is what men like this person sound like when they evaluate women. I am just doing the same thing back to such a man. If he thinks he’s a prime target for young women, he’s not.

Personally, I think evaluating people simply based on their ability to produce offspring is gross because you’re removing any consideration for them as a person. I feel icky having this conversation. There’s something wrong with conservative culture that makes them evaluate people like cattle.

The best part about that is your range gets bigger and bigger the older you get. So if you want to have sex with someone who was born before you graduated high school, just wait until you're 50.