No, that's just what I was careful NOT to do. I observed that they were "concurrent," not causally related. But I also asked why they're concurrent.
Are you curious?
I am.
Good question. It's not exactly ubiquitous in Germany, just nobody freaks out when they see it. Honestly, Germans just don't get the titillation you see in America with a flashed breast or the like. Even with all the billboards and sex shops (which, BTW, are usually classy establishments mostly frequented by couples), they just don't seem to be as hung up on sex as Americans.
It reminds me of the alcohol age. There, soft booze (beer, wine, etc.) can be purchased at 16, and you don't get your drivers license until 18. IIRC, they don't have as much of a problem with teenage drunk driving as we do. The kids are raised in an environment where alcohol isn't considered evil, and by the time they get their license, booze isn't the special forbidden fruit that they must have.