At the time the Constitution was written there were no political parties (although they appeared soon after) and several of the "Founding Fathers" wrote against political parties in the Federalist Papers (although some of them later became founders/leaders of early parties). They hoped that those elected to public office would act as well-meaning individuals, concerned about good government and not about personal power. They hoped that ideas would be presented and debated, and legislators would then vote on positions that they believed were in the best interest of the country. I don't know if they were really so naive, or if they really believed that could become reality. At any rate I think they would be horrified to discover that one of the two biggest parties in the country has given itself over to grabbing power for itself, to the extent that they are quite willing to dump the spirit of the Constitution and the Declaration of Independence, just to install themselves and their pathologically narcissistic dictatorial leader into a permanent position of power.
As far as the SCOTUS is concerned it's power has grown far beyond what the Founders imagined, or intended. Today most of the Justices are products of the Federalist Society, dedicated to (or at least strongly influenced by) ideas that favor putting political control in the hands of a few wealthy people. After all if they are rich it must be because they more qualified to govern than the unwashed masses! The judiciary may not write laws directly, but they can strike down anything that doesn't conform to their political leaning.