"public" almost never means literally anyone can use the thing without restriction. I can't drive any vehicle I want on a public road, and I can't drive a motor

"public" almost never means literally anyone can use the thing without restriction. I can't drive any vehicle I want on a public road, and I can't drive a motor vehicle on them at all if I don't have the proper license. in many places it is a crime for me to cross a road on foot if I don't use a designated crosswalk. most of the parks near me are closed from dusk to dawn, though I doubt this is an enforcement priority. I don't see any inherent reason why it would be wrong to limit access to a public service or property to people who actually live in the jurisdiction that maintains it. the history of who lives in a particular jurisdiction and why is often sordid, but that's a separate issue.