I think Canon Dumbledore does not know how to delegate and chose the wrong thing to micromanage. He was so concerned about getting Death Eaters into custody that he ignored his real job. So while that gross miscarriage of justice can and should be laid at his feet, it's because of well-intentioned negligence, not malice.
Canon Dumbledore also vastly overestimated the zeal of the free Death Eaters. The only ones with the wits to stay uncaptured or the wads of cash to use the Imperio Defense were also smart enough to take defeat with relatively good grace. Harry was placed with the Dursleys to protect him from a threat that didn't exist, as far as we can tell, until the summer before his first year at the earliest. (Once it was needed, it worked as advertised. But does that justify the decade or so of abuse he suffered before then?) Despite appearances, Dumbledore is more paranoid than Mad-Eye Moody, and with less cause.
Canon Dumbledore also vastly overestimated the zeal of the free Death Eaters. The only ones with the wits to stay uncaptured or the wads of cash to use the Imperio Defense were also smart enough to take defeat with relatively good grace. Harry was placed with the Dursleys to protect him from a threat that didn't exist, as far as we can tell, until the summer before his first year at the earliest. (Once it was needed, it worked as advertised. But does that justify the decade or so of abuse he suffered before then?) Despite appearances, Dumbledore is more paranoid than Mad-Eye Moody, and with less cause.