Maybe he just exaggerated in that aspect wherein he pointed out the time he learned about Bitcoin. Going back to Bitcoin's profitability, it is a good source of income but it cannit be the main source of income to MOST of the people. There are people who primarily get their income in crypto but since there are changes with regards to the market value movement, it is only good as a sidejob and not a primary job, in my opinion. I do also earn profit from campaigns and sometimes, trading.