Depends on the cause of emissions. A few are not for purely energy but involved in some kind of chemical reaction. Concrete and Metal extraction are 2 examples. Having a way to offset is important in a cheap manner. Metal extraction esp is a prob as carbon reacts with several metal oxides and reduces it releasing heat. Since it generates heat and creates the final product, it prob more efficient then the alternative electrolysis route.

But yes offsetting CO2 produced due to energy is a waste.