Can I be arrested for photographing in public places? That is a statutory question. Currently, there is no statute prohibiting such photography, so the answer is no.
Can the legislature, city council etc. pass a law/rule/regulation prohibiting photography in public places? That is a constitutional question. If such a law is passed and constitutional, than one could be arrested for photographing in a public place.
The case under discussion at least opens the possibility that a governing body could outlaw photography in public places on a very limited basis, if it is not communicative. Photography which meets the requirements outlined in the case could not be banned, as it is protected speech/expression under the first amendment.
I now remember why I gave up quit practicing law on a regular basis.