I don’t entirely agree, but your points are valid. I in no way believe E621 is non-profitable. If it wasn’t making money, it would go away. Second, it should 100% be an opt in system. It should also remain proprietary so nobody could use it outside E621. Getting artist on board wouldn’t be too hard if you made it clear that its explicitly for image tagging and not for generating spoofs of their art. Make it up front and clear that this is only for enhancing e621 and not stealing from them. I’ll just skip over the training point because there doesn’t seem to be a flaw in that logic. It will be expensive to train. I do dispute the accuracy numbers. Since this Ai would only suggest tags, it doesn’t need to be 90-100% accurate to be helpful. It just needs to put ideas for tags in the uploaders mind. As more tags are added to images, the Ai could also gradually improve.