People who are offended and grossed out at such images would like them banned.
They want men to understand that such behaviors are rude, unacceptable and should simply stop.
They feel some pride that their penis generated this strong reaction. But if we remove as much of the reinforcement, including negative attention, many of these men might view this behavior as ultimately unrewarding.
Unfortunately, I don't think such dialogue is happening, or even possible right now.
That distinction may simply be an expression of gender differences in mating and dating strategies.
The fact is, women are told that being sexually bold in such a manner is shameful and makes them a slut.
At least, in terms of sending the pictures unrequested.
Both males and females are commonly sending nudes of themselves to people they meet online, but women tend to wait until asked.