This is just a thought, I’m not saying I am correct at all.
But politicians probably aren’t (or won’t be) keen on adopting crypto because all transactions can be tracked. If we pay taxes in crypto, we can see exactly where it goes. And the government (referring to American) obviously isn’t very transparent nor do they want to be.
Seeing where our taxes go exactly will be liberating. But, obviously, there are some issues. Like lobbying, donations to politicians, etc.
But who knows, maybe it will be a step in the right direction.