Japan has a population of over 126 million so just 300 people paying taxes on crypto is quite laughable, but at least they probably won't have anything to worry about if or when the tax man comes a callin'. I think a lot of people in most countries will be getting away without paying taxes as well either due to ignorance of the law or the fact that they think they can get away with it because bitcoin is largely an unregulated market and the gov isn't told about your earnings automatically like they usually are by your employer. They'll probably find themselves in trouble at some point, though, especially when they want to spend their crypto profits and that's when the authorities will catch a whiff of you and want to know where all this money came from. It seems a lot of people are genuinely ignorant of the law when it comes to taxes on bitcoin and I've had a lot of discussion on here with people who naively think that no taxes are due at all just because it's bitcoin and a lot of them are probably in for a rude awakening at some point unless they live in a tax haven -- and I don't think the Philippines and Indonesia are tax havens lol.