@K-Flagg DeviantArt has backtracked (a little). They've updated their press release to state:
UPDATE: We heard the community feedback, and now all deviations are automatically labeled as NOT authorized for use in AI datasets.
cbr.com notes there is a Google Docs to submit your DeviantArt username for an opt-out. Is this now obsolete, I'm not sure. It has been difficult to authenticate the form, so I won't include a direct link.
As the press release notes, to help prevent crawlers from ripping images from your website, add the following to your <head>:
To not allow AI to use anything on the page:
<meta name="robots" content="noai">
To not allow AI to use any images on the page:
<meta name="robots" content="noimageai">
To place both directives:
<meta name="robots" content="noai, noimageai">
It won't provide 100% protection against bots or bad actors, but it's a good 1st level defense. For more info on updating your website code, Illustrator Aimee Cozza wrote a good how-to on her blog.
As for Instagram, it's owned by the company Meta, which debuted a text-to-video ai system, Make-A-Video. Behance is owned by Adobe, which has several ai system initatives. It's likely using content from their user base to feed the machine. Hopefully these companies and others will adopt the opt-out feature.