Vlad did not doubt that following Damian's plan would indeed grant him all sorts of wealth and treasures, and his cultivation level might even rise significantly in the process.
However, the Depravita of Wrath had journeyed to a Doomsday World to enhance his power by facing dangers that would repeatedly push him to break through his limits, thereby increasing both his potential and his overall might. Even if he managed to reach the final Level of the Sage Tier by staying in the fortress, he would end up as merely average at best.
That might be enough to rule a small plane, but it would hardly be sufficient to stand among Legends or to expand his influence in any meaningful way. After all, a flower born and raised inside a greenhouse could never compare to one that had defied all odds and thrived in the chaos of a battlefield.
