For example, Keynsian economics requires everyone to be forced to save through a central banking system. Otherwise the whole thing collapses. Keynsian economics has dominated the last 100 years of politics. Crypto gives you an escape which puts a check politicians who would be forced to be less spendy. The only other way of enforcing this would attack the ways in which politicians trade favor which seems impossible.

I can't see a single reason to stop spending as a politician if you can print money. Your political time horizon is shorter than the detrimental effects of your spending so the voting population is unable to de-obfuscate the cause of their purchasing power falling rapidly. I usually hear people blame the rich as a knee-jerk reaction instead.