This is all about transparency. Clearly the hall didn't do anything illegal, but they certainly didn't do anything "nice" either. Neighboors and people in neighboorhoods complain about all kinds of things. Some legit, some just their personal beef.
In this case, this man with traumatic brain injury certainly in my opinion should have been given the benefit of the doubt. As far as not sharing plans, it is my guess, that the homeowners perhaps are not that savvy, and didn't know how to read them, or that they could request them from the city in person.
If they had a handshake agreement with local elders not to block this mans view, then that is a dick move no doubt.
If the neighboors do not like the lights, perhaps they can negotiate a time they automatically go off. The city should have local light ordinance if I am not mistaken.
In short......they were jerks.....but its not as big of a deal as some are making it in my opinon.