Self advertising and dumping AI stuff by the bucket load are two completely separate things that shouldn't be thrown together.
Danbooru's stance on AI is clear enough, so I'm not going to delve further into that, but the stance on self advertising is something that needs more awareness.
Even though the Uploading One's Own Art is Discouraged guideline was removed in August 2022, to this day, there still is this persistent view among a small part of the Danbooru userbase that self uploaded posts are "frowned upon", "discouraged", or even "banned", to the point where the term "self-upload" is even used as an insult.
Even if an artist self-uploads dozens of images in bulk with visible links to their Patreon page, as long they pass the quality guidelines and are sufficiently tagged, everything is perfectly fine.
While henkawa is currently heavily in the spotlights, on the other end of the spectrum are artists like nepopan who self-uploaded their first two posts under their tag. Two absolutely gorgeous uncensored animations.
Was this to advertise their Twitter and Patreon? Absolutely. They even added their Patreon link in the commentary field.
We need more artists like that. We get great art and they get some awareness. It's a win-win.