He seems like a good enough guy (except for being an Onee X Shota fan. That's unforgivable :V), but honestly, what other job prospects does this guy have lined up? What can he even do? I get being dissatisfied with your work even though it pays the bills, but I'm not sure what regents are actually qualified for.
He seems to be doing a pretty good job, I think? At the very least he's got a peaceful enough relationship with the human kingdom. Moreover his 'subjects' seem happy and self-sufficient, at least in terms of governance.
If he could be said to have an obvious fault, it's that he hasn't yet established a department of child protective services to protect the good children of the Devil Kingdom. For example, helpless young orcs who have been kidnapped by suspicious scantily clad older human warriors.