This is one of your favorite books, and it literally, explicitly disagrees with what you're saying?
One of the core points of that book is that reducing emissions is not enough--we have to eliminate emissions, not reduce them, and investing in reduction solutions may in fact prevent eliminating emissions. Natural gas is literally the example he gives of this. He notes that natural gas is a minor carbon emitter compared to other fossil fuels, but continued investment in natural gas means that we'll still be emitting carbon in 2050, which is his target date for eliminating carbon emissions. That reduction won't be enough--elimination is the only solution.
I mean, dude, it's in the Wikipedia summary. Why would you cite this without at least putting in 30 seconds to investigate whether it supports what you're saying?