No it’s exactly as simple as I thought - obviously, it’s trees. What else would it be?
Decades ago there was a huge push to green up cities by planting trees everywhere possible. A couple of decades after that there was a huge push to remove trees because of infrastructure and safety concerns. Now a few decade later we are back to putting the trees back in. I'm always for more trees but hopefully this time it's a little more long term this time.
There was not a "huge push to remove trees." If you have specific examples they are isolated.