Journalism pieces do not require model release. The "questionable student loan repayment services" that used the image probably didn't pay Reuters and probably aren't using the photo legally.
To my knowledge, Reuters keeps track of which of it's library pictures have a release. They will allow ones without release for editorial/journalist content only.
Re:Yes, Those Are My Tonsils
by toomanythings3 on Saturday July 02, 2016 @09:15PM
(#12024435)
Activity in public does not require a release. Search for "street photography" or read one of these:
http://www.clickinmoms.com/blog/street-photography-and-the-l...
http://www.pdnonline.com/features/What-Photographers-N-10515...
Re:Yes, Those Are My Tonsils
by alistairSH on Sunday July 03, 2016 @12:46PM
(#12026632)
The first link indicates that the release isn't required to take the photo or use it in an editorial or educational context, but that one might be required to publish the photo commercially (which was done in the original link).
Maybe that's not required because none of the uses imply the subject is endorsing whatever product/view-point the various articles are promoting?