“Where is that Meiri? ”
Sanhedrin 57
“I don’t think that the above Chezkuni upholds that.”
From what you quoted, I don’t know why it contradicts the above? The issue is NOT if court should enforce the law or not, the point in concern is if the courts are obligated to carry out the punishments of death or not. Or, there a mitzvah as long as there is some form of enforcement.