The biggest threat to fiat money is inflation. Inflation can be cured by injecting wealth into the economy and by that rising enough belief to keep the system afloat. This can be done for instance by occupying foreign countries and by that opening up new markets to the companies that are essential to the economy. Or this can be done by loose regulations with the derivatives markets, that will create wealth out of thin air and high hopes.
Can it be that pumping of the crypto markets is just another financial shenanigan created to keep the old system afloat?
They are creating new wealth out of nothing with cryptos, just like with derivatives. The made up wealth that is created, is actually backing the value of fiat. This would make sense why regulators seem so blind on goxdollars and tether.
You can "inject" wealth into an economy. You can inject liquidity, for example, but wealth is created by economic activity which is determined by economic demand and you cannot artificially create that. Loose regulations can aide economic activity be decreasing the cost of operating a business, but it doesn't directly create any new wealth.
And no, pumping cryptos is not a financial shenanigan created to keep the old system afloat. That's a crazy conspiracy theory. There's nothing centralized about Bitcoin. It's a mass delusion that the masses perpetrate on themselves. The new "wealth" created comes from somewhere, it didn't come from nowhere. It comes from new people buying cryptos from people who already own them. Eventually the pool of buyers will run low because there will be nobody new to sell to, so no way for them to realize any gains. That's what has been happening to Bitcoin over the last 6 months. There's not enough new buyers coming in for the old holders to realize gains because they got in so late, so they cut their losses. This is self-inflicted damage for believing in a fairy tale, not some evil plot by anyone in particular.