Why did the Marleyans go after the Founding Titan if they were aware of King Fritz' warning to organize the rumbling?


The Marleyans were clearly after the Founding Titan to gain control of Paradis
Island's resources and to finish off the Eldians for good. But why did they
even plan on bothering them, knowing the King's warning of sending thousands
of Colossal Titans to stomp the world?

Geologically, fossil fuels could be found at so many places other than
Paradis, and most of the Eldians were either prosecuted in Marley or sealed
within the walls. Also, the King's will to renounce any sort of war was passed
on to each of his generations. With everything going to the Marleyans'
advantage, was the entire plan of breaching the walls worth it after all?




I believe Marleyans are in a dire situation - they've created a strong empire,
but other countries learned how to deal with their main weapon - titans. But
by launching a full-scale attack, they would risk the rumbling happening. So,
their plan was to send "spies" and retake Founding Titan "quaintly".

About the Founding Titan power itself, it needs royal blood as you mentioned.
If someone with Royal Blood inherits Founding Titan, they become a pacifist.
But Marleyans are probably aware there's another possibility.

Eren activated Founding Titan by getting in contact with titan with Royal
Blood. So he came to the realization that if Historia would become a Titan,
she could be used to activate his Founding Power (apparently human form isn't
enough, you need a titan with royal blood).

Marleyans have a titan with royal blood. So if they capture Founding Titan,
they can give it to someone without royal blood. Then Marleyans can use the
titans inside the walls and many other assets. That would mean dominating the
entire world for good.

Anyway, I think you're right that breaching the wall was very risky. King
Fritz could've started the rumbling at this point, but maybe Marleyans assume
he won't do it because it's his last resort. Also, they've been playing it
safe, sending mindless titans to Paradis for a very long time and the king did
nothing to stop them. They probably realized King Fritz will try to avoid
conflict and won't fight back.

Also, a lot of time has passed and I believe there are many doubts about
what's about Paradis true and what's not. No one has seen an army of Colossal
Titans, so maybe Marleyans started doubting if it even exists? It's also not
so rare for the ruling class to do something reckless to keep the status quo.

