Wrong.  This is not a criminal court case, where CO₂ is innocent until proven guilty.  It's a matter of risk management.  The financial cost of making serious strides to reduce emissions is as nothing to that of a 3^oC rise in global temperature.

In the last 100 years we have increased the CO₂ level way beyond what it had ever been during mankind's previous existence.  We are in unknown climatic territory.  As with the unleashing of a new drug or food product on the public, the burden of proof is with those doing so.