I actually don’t remember, it’s been a long time since I last saw it. I thought I remembered that the emperor had sent them to and she either didn’t know or didn’t care either way. I do remember that she was literally waging war on the forest, so certainly not friendly to nature. In a way, Miyazaki was too charitable. Eboshi was doing what she did because she thought it helped her people. Her flaw was only caring about the immediate needs of humans and not understanding their connection to nature, seeing nature only as something to be conquered for human benefit. In reality, capitalists aren’t even thinking that far, they’re just doing whatever makes them the most money individually in the short term. Eboshi has higher motives besides self-aggrandizement at least. Most real life capitalists couldn’t care less about anyone else.

I think she supported it but the emperor was the original founder of I recall correctly. He doesn’t appear in the movie though.