Except:

a. Even if this model were reasonable, removing trees isn't ameliorated by letting them grow back in 2.5 days. As an analogy, if I steal $100 from you, it's not reasonable for me to say, "But it only takes you x hours to earn that $100 back." No, you're out that $100.

b. Tree growth (eg, carbon sequestration) is non-linear. The first year of growth of a tree is much less productive than the 50th year.