It's just a reflection of 'lowest common denominator people-power' because most already imagine there is no such thing as copyright. Outwith people with jobs in writing, music, photography and the other arts who has the slightest idea of what it is?
As ever, it's only the really wealthy artist who can float a court case, and I don't think many ever do; what the average snapper on the social media would think is possibly even the opposite to that thought here, and more in line with: "wow! someone has used my shot! Yippeee!" followed by a host of e-mails to 'friends' showing it off.
We were on a loser right from the start, way before the Internet and any of that stuff. Artists don't count.
Rob C