After Snoke's death, Kylo Ren, who became Supreme Leader, reorganized the chain of command.
The invasion of the entire galaxy was a success, but it is necessary to maintain the system for the long term. Maintaining the system is much more costly than the invasion.
However, the First Order did not have such huge costs.
It was originally a low-cost military organization aimed at efficient special operations, and did not intend to run a nation like the Empire.
Kylo Ren, who understood the current situation of exhaustion in various places, unified all of the First Order. In fact, Kylo Ren did not understand the true nature of the First Order as well as Snoke.
The First Order has a complex structure like the Empire.
He does not understand an efficient decentralized system that is decentralized.
In other words, he is forced to efficiently control the galaxy with weak military forces.
As he unifies, he is shocked by the small number of military forces and materials. It is impossible to maintain the system for the long term.
He regrets that he caused the system to collapse by burying Snoke.
He cannot recreate the old Empire and become a centralized emperor. Marshal Pryde saw through this.
Kylo Ren is invited to Exegol with the aim of further unification.
This is the perfect opportunity for the Sith Eternal to transition to the Final Order. His plan is to rescue the First Order while seizing the initiative.
The Emperor uses Exegol's fleet as bait to manipulate Kylo Ren.
The First Order's exhaustion is an opportune situation. He will ensure that the system remains in place.
However, he will not guarantee this with quantity. He will deploy a large number of planet-destroying weapons at key points throughout the galaxy to maximize fear. Kylo Ren is astonished by this. The hurdle for destroying planets has been significantly lowered compared to Starkiller.
"Reduce the number of stars in the galaxy to make it more efficient"
"Perfect galaxy ruled by a small number of servants"
"No one person will monopolize the authority to destroy planets"