Suppose you have problems in your life, and you're suffering. You could drink alcohol or take opiates, and they might make you feel better for a while. But the effect wears off, and you're back in the same situation, except now maybe your problems are a bit worse, because the drugs made you sick, or made you do something you regret, or you become addicted, or you miss the feeling of them, or your tolerance has increased. You're flirting with a downward spiral. It's an unskillful way to handle suffering.

Well, same thing for trying to get solace from sex. It's like two drowning people trying to use each other as life preservers. Or two junkies who stay together just as long as they think the other person is helping them get the feeling they want. Love makes relationships safer because you will not purposefully harm the other person if you love them. You cannot love someone and use them to get a feeling to their detriment because if you love them their well-being is more important to you than your own.

That's the debate in the article body.

Less hedonistic meaning they are having less sex and so fewer unintended and teenage pregnancies, less drinking and drugs and so less violence and anti-social behavior, better relations with the parents and in particular their fathers, and more pursuing further education.

Basically every metric of bad behavior that used to be a cause of concern for 80s and 90s teenagers is across the board at record lows for the current generation of teenagers.

Downside is they are more likely to be depressed, stressed, sexless and lonely with weak connections to their age peers.