Problem is that posting online is easy and organizing is hard. Online, everyone wants to show off how smart, righteous, and correct they are for what they believe.
The truth of the matter is, what you believe does not matter so much as what you do.
Quite frankly, I do not believe there is any such thing as a cohesive left. We will have momentary alignment in struggles, which we will need to organize to meet the challenges of. Through the practice of struggle, practices will reveal themselves to be more effective than others, and certain theoretical ideas will prove themselves more useful for engaging in struggle. When operational considerations force your hand, rigid ideology will take a back seat to pragmatism.