What paid for the roads he took on his way to music classes? What funded the internet he made money off of? What paid for the tanks that kept his country in such a state that people could spend time studying music rather than fighting civil wars and subsistence farming? I'm sure I'm no more a fan of the Iraq War than he is, but I'm glad we have tanks and nukes, if for no other reason than their very existence reduces the likelihood we will need them.
If everyone gave their money to helping other people with their hobbies, rather than paying taxes, would you want to live here?
This is a strange argument. He isn't dodging taxes - the same tax code that pays for roads and tanks also specifically encourages people to give money to charities, by providing legal deductions. That's all he's doing.
The government has a mandate, and the power, to fund itself. The same isn't true of charities.
If everyone gave their money to helping other people with their hobbies, rather than paying taxes, would you want to live here?