Does it appear that Arthur is completely anti-social?

Arthur's separation from society seems to be his decisive characteristic, symbolized most dramatically by his defacement of the tank on his property. The tank's presence was a sign of the government's intrusion into his life but also of his belonging to a community, for the government could only put a tank where they have jurisdiction and jurisdiction implies the existence of some kind of social organization. Arthur, of course, is not completely anti-social, as he seems genuinely happy to have the boys come in, at least for awhile. Nevertheless, he does genuinely seem to be a man who simply wants to be left alone.