@Dysprosium I appreciate the straw man argument.
What I originally said was with the intention of working to make this site less controversial. I don't want Danbooru to be a "a positive force" for anime artists, because it can't. Since its' conception, sites like danbooru have always been controversial. Not arguing that, but like others here I just think that uploading paid content like what's happening right now is very problematic in question to the site's preservation. Dehumanizing creators and asking them to just go suck it up is not the right way to go about this; hence it's worth taking a look at the options we have.
At that, I'd like to really take a look at the "how" instead of the "why". We should already be in agreement that the rampant uploading of paid rewards is infact a huge problem; for the fact that our relationship with creators is a sort of push-pull rhythm. They create content, we help them be discovered. But it is insanely scummy the circumstances right now.
Most artists, CJK, western or otherwise, when they make note of the fact that their paid content is being uploaded somewhere else for free (especially only within a day or two in some circumstances), they immediately request or demand either part or all of their content be removed. Right, so we mark them as "banned users" or we simply ban the offending content (as in dishwasher's case). But we're not really removing it; we're gating the content behind privileges that can be acquired by simply paying for a membership on this site.
And then sprouts the idea in some regular uploaders' minds, hey! If we just **upload** the paid rewards, get the artists' content banned automatically, then we can continue to upload their paid rewards willynilly, without fear of repercussion or reprisal. Then we'll have it tagged, archived, zipped and sent off to the races. Problem solved, yes?
Except empirically looking at it, there's no way other users won't figure out something is up, much less the artist themselves. Then it becomes a pain in the ass for everyone; there's precedence that we're indirectly "selling" a membership to view paid "curated" content (which sounds pretty illegal to me); regular users no longer can view their work; and it negatively affects creators' operations and might possibly cause the closure of many of their own accounts, even to their legitimate patrons, because one way or another it gets out there.
I get that we're clear on this much. But then either all of it is okay, and we go full blown piracy website and risk some serious trouble with hosting and legal issues, or we discourage it as much as we can, because there are clearly better sites to get this stuff from (see nonamethanks' comment). People who want to find it will be able to.
I will not talk about the circumstances in which or how effective artists gain income from their patrons or to the extent that digital piracy affects them, because it's speculative. And I know this problem is not unique to paid rewards. But the reason people feel so strongly about this is because of how much it affects creators directly. They don't take a commission or offer of work from a larger company, they're literally just doing what they love and providing a special service for their fans.
Leaks will happen. Hell, even I've leaked a ton of paid content (and continue to do so in more private and personal settings, as I've subbed to many creators on fanbox/fantia/patreon and crave more). Honestly I wish every artist out there wasn't so annoyed about it and would just acknowledge that it happens, but not everyone who does it is bad. It's just our appetite for beautiful, sexy, or lewd art is insatiable, such that it would be **impossible** for anyone without a decently high salary. This article is something I agree with and refer back to at times, so I understand this much; but until that understanding is commonplace it's better just to curtail it.
(Or not. Convince everyone here that a digital piracy free-for-all is the way to go, and that's that.)
I'll close out with this -- the notice on the paid_reward tag is really to put up the facade that we're doing what we can to get offending posts out the eye of any rampant leechers and people with the wrong idea. But as OP mentioned, there are no real consequences to doing this. The circumstances allow nothing to be done to an offending user. There ought to be at least some measure of determent.
P.S. Danbooru is FOSS code. If someone wanted, they could just create their own derivative where paid rewards are uploaded without repercussion. Hint.
EDIT: thing, and another thing