Establishing absolute monarchy requires the most important support: the people's approval.
You might think that in an autocracy, the concept of approval ratings doesn’t apply, but if you shift your perspective slightly...
If a king does whatever he wants without regard for the nobles, they’ll protest, saying, “Aren’t we supposed to share in this? This is immoral.”
Most rulers, upon hearing such complaints, would compromise and say, “Let’s make an agreement and end it here,” and negotiate.
However, a ruler who enjoys absolute support from the people can reject such proposals immediately, saying, “Screw you. Do you think I care? If you don’t like it, the people will smash your heads in.”
‘This is why our Emperor can do whatever he wants.’
“Isn’t this inciting a rebellion? Isn’t that too extreme?”
“The words may be extreme, but they’re not wrong, are they? And, Your Majesty, the labor laws you set don’t just favor the weak. They are not unreasonable or biased toward the common people, as the nobles or merchants may think.”