Aside from criticizing the particular number of trees proposed and planting the wrong kind in the wrong places, what's wrong with wanting to plant more trees? I

Aside from criticizing the particular number of trees proposed and planting the wrong kind in the wrong places, what's wrong with wanting to plant more trees? I'm asking because I honestly don't understand what the commotion is about. I've planted dozens, and I don't understand why that would be a problem.