I see people posting photos and videos of their children in public Instagram accounts all the time, and I think that's a terrible thing to do. Not because creeps might get off on them (though of course that's bad), but because it shows that the parents -- who have been entrusted to make decisions on behalf of their minor children -- are showing a distinct lack of respect and care for their children's privacy.
I don't have kids, but if I eventually do have any, I will never post photos or videos of them on IG, FB, YT, etc. I might privately share some things via better-protected, private-by-default channels (email, messaging apps, possibly private sharing on something like Google Photos), but that's it.
This isn't about self censorship; this is about understanding what these public services are about, and making responsible decisions about what I do and don't post.
My personal opinion is that it's the other guys problem, if they want to sexualise images of my kids, if I have to self sensor, we've already lost. But as my partner points out principles don't count for much if you've got pedos trading pictures of your kids, so.....?