we know for sure is that the scientific community have a consensus
This is the point, there is no consensus yet.
I would prefer a positive debunk of the theory rather than just saying that the theory is incomplete.
I would prefer Proof of the theory rather than saying I suspect so let's take drastic measures.
Ten years ago the 'unproven theory' camp were saying that the temperatures weren't going up
Thirty years ago we were being told to expect global cooling!

The bottom line is this. Do we cut emissions now at a crippling cost to our economy based on unsure predictions? It is a risk analysis we are looking at the immediate certain risk to our economy vs. and uncertain risk far off in the future.