So, DeviantArt opted in, by default, all existing art on the website for use by third-party AI.
Without notifying their users. For all existing art.
You have to go through your art pieces one by one and tick a box that you do NOT consent to this.
I learnt about it on Birdsite, by accident.
And of course, any inactive user or dead user will have their art used by AI models from now on, even though they never agreed to this.
Disgusting.