Two things.

First, it’s natural to expect children to be more traumatized by an event than adults.

Secondly, the period before and after a peak is a slope, not a sudden drop into nothingness. This means that a thirty year old woman is not “sexually invisible”. Similarly 40 year old men aren’t invisible either even though they supposedly peaked at 30.

Those two problems are linked like two halves of a circle.

Want to know why some older man is a jerk and treats you wrong and it might be the reason why: he is still that younger man inside.

I don't think he's dismissing that it's probably terrible for the women it happens to, too, but it's worth noting that when it happens to teenage boys, it happens while they're still developing, trying to deal with everything else that goes along with being a teenager. Presumedly by the time it happens to adult women, they're a bit more mature than the average teenager, and somewhat more equipped to process it.

It's not a contest.

The OP literally makes it into one. The post is literally called "power imbalances." How is this not a conversation about competitions?