In the current situation Ukraine government is asking for donations in cryptocurrency to support Ukraine. Their citizens are also depositing their money to crypto for easy usage in the current situation.
In this situation do you not think USA has to support crypto?
The FED decision should be in the given in a way that it do not put negative effects on crypto.
The world existed for a long time without crypto, the world can continue to exist into the future without crypto - that is the answer to your question. Instead of implying that they need to support it, accept that regulation will eventually be brought in and that will hopefully see it more prominently compete with national currencies. Cryptocurrencies are still a fringe commodity at the moment and the value behind them could disappear tomorrow with relatively little impact to the world economy - sure lots of individuals might lose significant amounts, but then 99%+ of people never have regular transactions through this system of payment.