He was right in his initial thoughts; taking over the Immortal Origin World was indeed not as good as creating his own force from scratch.
Picking peaches?
Are peaches so easy to pick?
A misstep, and one might fall off the tree!
Initially, the True Martial Saint Lord and the Holy Mother promised him many benefits to make him the Lord of the Immortal Origin, but now? The Immortal Origin World was mostly destroyed, hardly different from not having any so-called blessed lands and havens!
Those millennia of gathered origin energy within the Immortal Origin World... he suspected they were now out of reach. This battle wasn't even certain to be won; by then, they would be lucky just to save their own lives!
As for the matter of breaking through the New Layered Heaven, he still had no clue how to achieve it!
He gained nothing, yet ended up in such a predicament!