I think the mentor gave up and said just use what you are comfortable with. Nothing wrong with that, best to use the tools that we are most productive in. Weird article though.
Grow more plants in the ocean? Restore corals? If you remove all the CO2, how will the plants survive? Do we know the balance? Why is CO2 vilified so much?
A good goal, but probably too tiny to matter much.
> If you remove all the CO2, how will the plants survive?
Nobody wants to remove "all the CO2".
> Do we know the balance?
Not in exact detail, but getting closer to 1900 levels would be good.
> Why is CO2 vilified so much?
Seriously? You ask this in 2021? Because it changes the weather and those rapid changes cause extinctions and habitability problems. Including killing corals.
Dumb (probably) question: Do phytoplankton in the ocean consume CO2 in the same way that land plants do? If so, does the increased dissolved CO2 cause them to grow faster?