Bravo for Argentina! However, when central banks and their governments manage to control the debasement of fiat and draw down debt by reducing spending and increasing taxes, their currency remains unsound money. This may temporarily restore the people's trust in their currency managers. But, where is the PoW? PoW underpins sound money. Having a printing press controlled by politicians will almost certainly be used to hold onto power. Despite long term negative consequences they will print to counter rising unemployment, stimulate a sluggish economy, reduce debt load, etc.

To answer your question, a well constrained monetary policy does extend the timeframe for Bitcoin adoption, it would indeed slow down adoption along with the sense of urgency to move out of cash, but this does not completely remove adoption.

Bitcoin, under these circumstances, remains sounder and therefore better money than even reasonably well controlled fiat. The angle of adoption may soften, but Gresham's Law remains unchanged.