Let's not forget that pictures like this are used for social engineering attacks in domains ranging from finance to prostitution to blackmail. I honestly don't

Let's not forget that pictures like this are used for social engineering attacks in domains ranging from finance to prostitution to blackmail. I honestly don't care about the researcher (assuming he doesn't release the data set publicly). It's the responsibility of Facebook, Tinder, and similar sites which profit from such images, to go to extreme measures to protect them even if it incurs significant costs such as counter scraping.