It was already mentioned the laws on the Mainland were absolute. Even Maximus could barely break them. But now that the current talk in the royal court regards the person who would sit on the throne, it was a long discussion in the royal court.
If Maximus produced an heir, there would be no problem. Another case that would be in many people's favor would be Aries's death. If the Queen died, then the throne would naturally fall to the late king's sibling or those who were in line for the throne.
But the queen was alive.
Even if many people wanted to disregard it, Aries was still legally the queen. They couldn't just ignore that. It used to be an empty title when Maximus was alive, seeing Aries as nothing but a worker with a title too lovely for the ears.