To Hiruzen Sarutobi, making Sunagakure pay thirty years of war reparations seemed a little cruel. After paying that much, could Sunagakure even survive? It would take decades of recuperation before the village could hope to recover. Driven into a corner, Sunagakure might end up fighting Konoha to the bitter end.
But as far as Tobirama Senju and Uchiha Yi were concerned, if Sunagakure could not afford to maintain its forces, it could simply cut them.
Better someone else than themselves. As long as another village suffered, not their own, that was fine.
As for what Sunagakure would do afterward? From the moment Uchiha Yi gained such overwhelming strength, they had no future left. They would either become pawns that plunged the shinobi world into chaos, tools for the Sage of Six Paths to perpetuate war, or be wiped out by Uchiha Yi himself.
Hiruzen Sarutobi hesitated for a while, but ultimately followed Uchiha Yi and Tobirama Senju's wishes.
Sunagakure initially refused Konoha's exorbitant demands. But once Hiruzen Sarutobi stated that Uchiha Yi could visit Sunagakure at any time to carry out a massacre, they hesitated, then chose to negotiate peace.
They had no choice. Uchiha Yi was simply too ruthless.
There were people in Sunagakure who had witnessed Madara Uchiha back in the day. Uchiha Yi's presence now gave them the same feeling as Madara Uchiha had then—except this was a Madara Uchiha without Hashirama Senju.
Back then, Hashirama Senju had kept Madara Uchiha in check. Even when the First Kazekage kept stirring up trouble and dared to provoke Hashirama Senju, nothing much happened to him. Had he provoked Madara Uchiha instead, he would not even have known what killed him.
Those people all knew that provoking Hashirama Senju was no great problem, but provoking Madara Uchiha meant certain death.