Who defines “good hands”?

How do you assure the dictator stays good (corruption, dementia, general personality shift)?

What happens if the dictator is no longer good (died, see above, the world has changed and the dictator can not adapt)?

Sure the dictator can assign ministers for topics outside of their skillset and similar and a head physician to determine when a replacement is needed due to health reasons etc, but a dictatorship is always unnacountable. What if the physician coludes with the vice-dictator to declare the dictator unfit? What if the dictator is actually unfit but accuses the physician of colusion? It has no safety checks against its rulers other than revolution and coup.

Democracy has flaws but so does dictatorship and they are not limited to “what if dictator evil”

While Winston Churchill was problematic to say the least, I do find some truth in his old line that “democracy is the worst form of Government, except for all those other forms that have been tried from time to time.”

A dictatorship can be more efficient, but is never as equitable.

If I was dictator of the world, I could do everything so much better.

Democracy does seem to cater people just below average. Good monarchs can easily beat that, but then the new problem presents itself very quickly - good monarchs are far and few between.

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If by “democracy” you mean the broad philosophy of people having a right to decide the law for themselves in some way, then I would argue that it’s better than even a “good” dictator. Dictators can be fickle, capricious, manipulative, and more while appearing to be utterly golden individuals outwardly. What happens when culture changes but the dictator doesn’t like where it’s going and refuses to change his ways? Is he still “good”? And as others have mentioned, how do you quantify “good” anyhow? You’re appealing to a moral standard presumably outside the law, so what happens when that standard doesn’t match what the people believe?