"Is it really a surprise that shut in's, the lazy, and teenagers still living with their parents would be attracted towards libertarianism?"
LOL. Your "hardcore" gamer types are far from lazy. Some are down right workaholics. Albeit their "work" involves the building up of Characters for games, that then sell for HUNDREDS of dollars for what amounts to 15-25 hours of work. Seriously go price out a fully loaded Game Character for World of Warcraft, Runescape(yup, people STILL play that) GUild wars, and others.
Then some of them repair computers/equipment, or make custom PC/Console Cases for sale from their home for once again hundreds, maybe even thousands of dollars a month; all off the "books".
Its not ALL neckbeards and shut-ins. Although there are a lot of them too.