Bitcoin is instant way to get rich?
Not really. Even the people that bought bitcoin at a really low price, they still have to wait for years before the price has increased this much. They may be rich by now but they had to discipline themselves to not to sell before even when they could have made a decent amount of money.
Newcomers also don't get instantly rich with bitcoin. We still have to mine, collect, earn, and trade bitcoins in order to earn money. It's basically the same thing as fiat. You do things, you get rewarded for that. The only advantage is that it's a lot easier and the price is always increasing. There are people that are lucky with bitcoins. Those are the people that have skills for services that are always in demand in this place like programming, designing, content creating, etc. If you're competent, then your journey towards getting rich is a lot shorter than others.
I just want to add that "rich" is subjective. A person that's rich in a developing country can have the same amount of money for someone who's just a working class in a first world country.