It's not all that surprising given the amount of information that becomes public record when the government is involved. Granted the information usually isn't published by the record holders(ie the government).
this was a blatant attack on a high profile person
I disagree, he wasn't singled out, all of the people who appealed were on the list/map. Unless you have information that the article doesn't contain, what makes him high profile or unique?
What does make this interesting, is the process in which the information(and amount of the information) was made public record. That is indeed questionable, that they may have been uninformed that they were making the the information a part of public record by appealing. Particularly since PA state law intends for the information to be private.