I don't necessarily see this about whataboutism if the people making claims support another person or party that has the same faults that they are claiming.

That is a rather misguided and hyperbolic view of unitary executive theory. The president would still be elected and bounded by the constitution.

That’s a rather naive view of unitary executive theory if you look at how it’s actually been used. The people pushing it say they are not bound by the Constitution, because part of the theory, which was advanced during a Trump’s first impeachment trial, is that if the President does it, it can’t be a crime. He was acquitted under that theory. Moreover, he argued the proper venue for accountability is the courts. But in court, he argued the proper venue for accountability was impeachment. SCOTUS essentially agreed with that.

So when you say “bound by the Constitution” what you really mean is bound by being able to sway 10 senators from his own party. So… not exactly bound is it, considering he’s already shown he’s willing to arrest his political opponents (and under unitary executive theory it’s within his power to do so)