Its a great tool to take a bunch of fiat out of the market and have it all up and disappear like a fart in a hurricane!
That's not how money works. Securities and such don't just soak up USD in such a way that USD vanishes and is then not spent. It just means USD changed hands in a transaction of a security/token/whatever that has inflated value due to an oversupply of fiat currency (in this case, USD). The seller still receives the money and then can go on to spend it in other markets.
If I run an ICO and sell billions of tokens raking in tens or hundreds of millions of USD, I can then turn around and spend it on real estate, precious metals, or something else. Then I inflate the value of THAT stuff since the supply is either finite (real estate) or relatively fixed (metals, based on mining/production) and I'm outbidding other buyers through brute force. Then the people who sold me the property/metals turn around and spend that money on luxury items, so now the luxury items go up in price because they're either reducing supplies @ MSRP or paying scalper prices (suppliers of luxury items usually would rather charge a higher rate than produce more product). Then the reseller of luxury items turns around and buys essentials - food, fuel, clothing, medicine, what have you. Unless the supply of that stuff goes up to match the increase in money supply, eventually the prices on those essentials will creep upwards just from all the money that some people can throw at it, all thanks to the overprinted USD.
The people who have not tapped into this new money supply still get screwed. That extra USD doesn't just disappear. The only way that happens is if it gets locked up in accounts where absolutely no one will spend it OR lend it to anyone else through things like fractional reserve banking.
The only way to cope with increased money supply is:
Stop printing so much
Encourage your economy to produce more essentials to balance out the money supply and bring down prices. Today that means lowering energy costs, drastically.
. . . and that's it fam.
Unfortunately, what the US seems to be doing right now is increasing energy costs and printing too much currency. That double whammy is going to make life hell for anyone that isn't swimming in overprinted USD. Cryptocurrency is just one way that everyday schmucks can tap into that money supply if they trade intelligently. It only takes a few moonshots for you to become financially secure, if not rich, depending on how much beer & cigarette money you're willing to throw into the arena. I've personally witnessed dozens of them since 2016, and at least two of them were (for me) easy to read from a distance. Crypto is still much more-accessible than the stock market for bargain buyers, too. Sucks for anyone who misses out though, or for anyone who buys the top and sells out of frustration when crashes happen.