Of course they did, social media has damn few brains but lots of pull.
While I wouldn't recommend sleeping in front of a commercial premises as standard behaviour, the incident should be regarded for what it was, doing very minimal harm to the franchise. Soaking the guy and his blanket was just a very ignorant thing to do- the guy has nothing beyond a dog and a blanket - we don't know what his life has been like, but one thing for sure he could probably use some help. If I had been there I may have dumped that water over the A$$hole's head.