Amouranth is making a ton of money off , as confirmed by the recent Twitch data leaks, but she has a rather diversified income stream.
So while anyone could simply click on Amouranth's tweet and save the image, they wouldn't have the license to prove their ownership of it.
As always, make your own research prior to making any kind of investments.
Take any hot amateur and the fashion advice goes out of the window.
Instagram has a similar policy surrounding sexual solicitation.