One possible explanation is that this has an obvious environmental aspect. If somebody is doing something for environmental reasons, it doesn't seem surprising

One possible explanation is that this has an obvious environmental aspect. If somebody is doing something for environmental reasons, it doesn't seem surprising that people are thinking about it from an environmental perspective. Obviously many things not done for environmental reasons have environmental impacts, but the mere idea itself doesn't automatically invoke that perspective. You can read about a new fab without thinking about the environmental aspects, but you probably cannot read about somebody recycling plastic without thinking about the environment.