As they say, democracy doesn't guarantee a good government, it guarantees a government the electorate deserves.
People always get a government they deserve, even when it is a dictatorship. Nothing guarantees a good government. So your statement is saying nothing at all.
A: Wait, I can explain Everything! It's not what it looks like!
Life in the state of nature is solitary, poor, nasty, brutish, and short. - Thomas Hobbes, Leviathan