Hire implies we get paid. We do this all out of our own good will. (regardless of what your inflection was with that I DO understand your point though)
As far as pictures, there is a stupidly small percentage of spam posts (by an actual bot) that contain pictures. By "actual members" there's another stupidly small percentage, and it's almost entirely disgruntled idiots that got banned and now want to take their ball and go home, except it's not even their ball, so they're throwing a temper tantrum.
Shitposts are a different story. If you see someone posting the latest, hottest meemay, laugh at it, report it, and move on. We read every single report. We don't necessarily act on each one, but that does mean we make a conscious decision to reject it. If a post doesn't get removed the second it gets reported, we might have a different window open, might be out shopping, eating dinner, or even choking the ol' chicken if you will. Believe it or not we're human as you are. We also don't get alerts for new reports like we do for notifications (those little pop-ups and the tab icon changing) so we do have to manually refresh the page to check for new reports.
Any automated means are going to turn off new members from posting to the site in meaningful ways, much in the same way that DRM doesn't punish the Pirates, it punishes those who are honest. more than once have I seen a person with their first post being some new homebrew they've developed or even working on an exploit or hack of sorts. So this really all circles back to, if we're talking about actual spam from bots, report it and move on. Don't reply to the thread because it just bumps the post and gets it more exposure. If nobody replies it'll fall off and die anyway. And if you think people find it funny when you reply "ewww no stupid spammer I do not want to buy your pills they probably have aids in them" to a spam post, guess what - it's not funny.