So it's your contention that God--a being of infinite power--turns to beings of finite power--angels--to get things done. And, as you've previously stated, God does this to protect us.
How does deferring to a lesser power protect us?
To put it in human terms, God has the drop on the devil, as he's packing heat. The devil pulls out a shiv and flashes it. God then tosses away his pistol and also protects us with a knife.
As if God couldn't protect all of us with a flick of his wrist if he chose to.
Why would God limit himself?
I, however, know why this conspiracy theory got started. Saint Vic was afraid he would be exposed as the faker he is, so he had to make up an excuse why all those followers weren't living the abundant life like he promised.