These crimes are always about power and control, not about sex. I think a part of it comes from feeling powerless (or having felt powerless long ago) in other areas of life. This is obviously no excuse and absolutely abhorrent behavior, but as we can read in the article these men will walk the streets again after a few years, so psychotherapy for them should be mandatory, with their sentences extended if the therapist thinks it's necessary to prevent further victims.

It's not about the sex for people like that.

I understand the sentiment, but that's not how it works either. People aren't that simple.