Because they do actually think they're the ruling class. Well, maybe they are in California, where the people of LA and SF beg to be ruled by their masters.
We no longer live in a Constitutional Republic. We now live in a feudal society, where the feudal lords operate with complete immunity to their actions, while the rest of us are hammered flat for minor infractions. That's not a bug, it's a way for the feudal lords to show their superiority to the serfs and peasants that they rule over.
The massive criminal activity that was the 2020 election shows that even if we have the votes to change things, the Democrat party will just stop the counting until they can manufacture enough votes to get their guy in.
This country is fucked.