While I agree with the fact that this kind of behaviour [i.e. randomly "hanging brain" (my new favourite idiom), unsolicited, in someone's DMs] is SO many shades of shitty in whichever context it happens, in this case in particular the job description* really does work for building up context and highlighting the dichotomy between the type of people who send dick pics and the type of people they sometimes reach.
As a bottom line, it should serve as a good enough cautionary tale about keeping one's damned junk in their pants unless someone wants to see it, because one'll most likely end up looking like an utter asshole while also potentially ruining someone else's mood for literally no good reason whatsoever.
(still me, blahaj is down)
Edit: to avoid any pointless "but it isn't just men" replies, of course it isn't just men, but women seem to not have such a huge friggin' need to expose themselves to unaware passers-by. This is me, speaking as an AMAB and approximately cishet. And I wouldn't like to see a random centrefold on my phone while checking my messages, either, to be perfectly frank. There's a time and a place, and many more factors before I get to that point.
I'm sorry, I really don't have the time to do reading comprehension with you, I've put it pretty clearly in the very first Idea I've listed. Also, reread my conclusion and see how much someone's job shows up in what I've written.
Have a good'un.