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.
Or maybe TimTheYoutuber is still a kid? If he learnt about it five years ago and he was a kid, he's at oldest 21 now, which is still a kid in most places I know;)
But joking aside, I think we should always look at bitcoin as something useful for sure but never about money and profitability (even though that will come with price going up slowly). I think people who think about profit first tend to lose their btc.