I want you all to know because of this post I have gotten the worst, just absolutely fucking gooner fuel anon to ever exist. It's like 3 fucking paragraphs of how this anon would violate my drawing of a homestuck character in such a disgusting way I don't even know what to say. So. Thanks I guess.
They are already selling data to midjourney, and it's very likely your work is already being used to train their models because you have to OPT OUT of this, not opt in. Very scummy of them to roll this out unannounced.