Historically, Robespierre was perhaps too radical in his operations, but his being known as the "Incorruptible" speaks volumes of his integrity.
After the Jacobins came to power, he, as France's de facto leader, indeed devoted himself wholeheartedly to the welfare of the people—at least he believed so subjectively—and never used his power for personal gain.
He also had some resentment towards the wealthy.
Taking all these characteristics into account, Joseph believed he was the ideal candidate to oversee the tax system, unrivaled by any other.
Upon hearing this, Robespierre seemed to breathe a sigh of relief, yet also appeared somewhat deflated, "Your Highness, although I don't have experience in tax matters, if you request it, I will do my utmost to perform well in this role. However, I think it might not be as risky as you previously described."
