The actual problem with technocracy is that you create a formalized hierarchy of leaders and rabble based on some credential granting authority that the technocrats control.

That's a recipe for disaster. The technocrats define who can be a technocrat, and can design the process to benefit them. The incentives are towards elitist, racist, cronyist policies that would select for sociopathic tendencies.

What's the difference between a technocrat and a bishop in this case?