I think what might be at the root of your issue here is that an outcome of a skillful mindset (oscillation) is often equated with that skillful mindset (accepting the limitations and uses of many views.) Its a bit like taking self-depracating as a sign of humility, it can also be a tool of a narcissist.

An important notion underneath the lauding of oscillation is one that is common in science ─ convergence across perspectives is a good sign and divergences are interesting. You will not find these convergeneces and divergences without oscillating. To me the point is not to demand synthesis, but not disavow it, either. Oscillation is a given if all views are inadequate, so we can oscillate without shame. This turns dysfunctional when oscillation is equated with development. Synthesis is still good where you can get it, but demanding a unified view is foolish.