PSA: Investment fundamentals still stand, don't fool yourself
This is not a way to get rich quick and easily with any level of consistent reliability. These guys who have "doubled" their money with no effort, haven't doubled until they 100% pull out of the market. Until then they could still half their investment in a crash
This is just like the stock market, just like any market. Don't fall for scams. Use your brain. Use common sense. If it's too good to be true, it is. Nothing will rise forever at a rate that far exceeds the rest of the market. I say "forever" because it may rise for a bit, and YOU don't know when that will stop, bringing you back to square one or worse
Be smart, don't invest everything you own into any crypto or any investment in general, ALWAYS diversify
DIVERSIFY. If you're reasonably young, then you should be doing something like this:
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6 months living expenses in cash, in a savings account
10% in bonds
40% in index funds, sp500 is fine
20% in other diversified funds, but less diversified than index funds, such as sector funds (prefer software/tech), staple funds, or heavily diversified individual companies like BRK.A, etc. with a history of beating the market
5% in commodities like gold and silver
15% in diversified crypto
10% in whatever you want
If you go 100% on crypto you may as well go to vegas, look how hard they all crash when they crash. How much are you holding? Yeah you've made 10x but it could go away instantly. This won't happen if you're diversified.