Maybe he was inspired by Bill Gates. He has been out there pushing for cutting down hundreds of millions of trees and burying them to trap carbon.
https://www.ktsa.com/bill-gates-please-grab-some-pine/
Trees capture carbon as CO2, releases the O2 and uses the C to make cellulose, aka wood.
Killing them would stop that cycle and the wood will begin releasing the carbon it has stored over its lifetime again as CO2 as the cellulose rots...........