It's interesting, I agree with what you say here and this is what I thought you were saying... But when I read it the first time without additional context it kind of sounded like the argument was that we are infantilizing the older individuals. It appeared that the argument could have been: we make the "rules" and apply them to the older half because they are the ones who are incapable of dealing with their emotions, needs and desires.

You are right that it is in the subtext. This is the same poor argument that men are unable to control their desires if a woman wears revealing clothing... Just restructured around women being "taken advantage of" by a "smarter more mature male".

It might also have been why the other commenter thought you were defending the conservative position. There are two steps here that you made when the intermediate step could also apply and would be an honestly revolting position to defend. I couldn't quite figure out if it was a reasonable position or a very well hidden dog whistle.