It's insufficient - there's a cap on how much carbon we can stop emitting, and maxing that out will not be enough to halt climate change. Agreed though, in the sense that we should fully fund the cheap options while also funding research on going carbon negative.

+0 tonnes is not equivalent to -1 tonne of C02 emission, because maths.

Reducing current C02 levels is more difficult and expensive than just reducing C02 output, and has a greater impact on overall reduction, but both are moves in the right direction.