The required reduction in emissions is 99.9% (net), which is approximately "everything everywhere except maintaining grassland"[0] if done by reducing gross emissions; the last percentage point of a problem is usually the most difficult, so if we can get a whole 8% by making a cheap sink, that's probably for the best.
Just so long as it's in the sweet spot of "cheap enough" without crossing over into the realm of "people can make money mining the CO2 out of the air", because if that happens then the same economic pressure that means we have too much CO2 now will become one of too little CO2.
The required reduction in emissions is 99.9% (net), which is approximately "everything everywhere except maintaining grassland"[0] if done by reducing gross emissions; the last percentage point of a problem is usually the most difficult, so if we can get a whole 8% by making a cheap sink, that's probably for the best.
Just so long as it's in the sweet spot of "cheap enough" without crossing over into the realm of "people can make money mining the CO2 out of the air", because if that happens then the same economic pressure that means we have too much CO2 now will become one of too little CO2.
[0] https://ourworldindata.org/ghg-emissions-by-sector