Well their citizens have the option of using an alternative currency such as the USD or Euro or whatever if their leaders really screw up

Only on the black market, realistically.

I'm sure the leaders will do a much better job if they know the populace has alternatives to switch to.

Not be locked into a limited child's toy tool set just because their predecessors were less than competent.

Bitcoin isn't taking away anyones money printing machine. It just makes pushing the lever less attractive.