Keynesian economics has proven very useful in the past. I don't think anybody could argue it hasent.
I'll take the bait.
Perhaps the useful aspects of Keynesian economics can still be adapted for use with bitcoin. For example, gov can still hold btc and increase spending during recession. And it can still create policy that encourage spending, licenses, tax incentives etc.
I believe you have internalized a number of assumptions about economies. Or, you simply haven't challenged what you've read...
Why is "government spending during recession" necessary? If you think about this, it's usually because a government has:
1) Overtaxed its citizens, and/or overburdened the productive sectors with tariffs
2) Distributed wealth unequally toward the top 1% because of monopolies and graft
3) Created huge trade imbalances and market inefficiencies
Money doesn't just disappear - if no money is circulating in the economy, it's usually because the rich are hoarding it.
Granted, printing more money "solves" this problem by devaluing the hoarders' stashes, but back in the old days the rich
started spending when they started getting eaten...
Afterall, perpetual growth is impossible in a finite world, so if we don't want to bust, we need to solve this issue.
What makes you think trying to do something impossible is a good idea? Or perhaps you're moving to a world that is not finite?