The court is political. It has been made so by the inert and hyper-politicized right-wing congress, split across two parties of like minds, and recent hyper-political White Houses.

SCOTUS is not in charge of the degree of their politicization.

You already concede that they are dividing and deciding along ideological lines.

How many ideological decisions does SCOTUS have to render before it can be considered broken?

I would argue - one.