I would say that the reasons you stated above are uncomfortable because they are implicitly discriminatory to people outside those areas who want to move in. People who already live there are, in effect, saying "we're full up here, go somewhere else". And these are often the same people with signs in their front yard saying things like "no matter where you are from, we're glad you're our neighbor" in multiple languages, or "climate change is real", or "no human is illegal" which espouse values in direct opposition to that implicitly discriminatory message.