Because the current legal environment the site's legal status is ambiguous. (And hence could be (and likely is in this case) illegal) Model release forms (if t

Because the current legal environment the site's legal status is ambiguous. (And hence could be (and likely is in this case) illegal) Model release forms (if those are what they sound like) unambiguously state that what is going on is agreed upon and the company has the right to post the picture for their own profit. (And hence is unambiguously legal)