@shoshin The idea of tying yourself to a tree was not linked to trees in general. They did this in protest of cutting down ancient redwood trees specifically.

For ordinary trees they are against deforestation of course, but projects that plant new trees to make up for trees they cut down (which is very typical) is usually the sort of project they will support, particularly when that work is to develop public transit that had a positive effect on the health of our environment.