Or the increasing impunity all three branches of government are giving themselves with regard to bad faith interpretations of the law, and a lack of government accountability when they color outside the lines.

Much of the impunity is now Supreme Court settled law.

We see clearly unconstitutional behavior every day, and there is no systematic, timely or effective, push back from any constitutionally enabled oversight.

Checks and balances don't work, when players are more loyal to party than branch or constitution.

Unfortunately, there are no constitutional checks, balances or limits on single party control. And single party control negates all the others. That one party can majority control all three branches is a serious failure mode in political incentives (bipartisanship is highly disincentivized) and governance (even temporary or shaky full control incentivizes making full control permanent over all other "policies").

Until the last few decades, diverse concerns across states avoided tight centralization within parties, and therefore across branches.