people at the station that were just pointing passengers towards the exit
This is actually one of the things I really like about Japan. It's so easy to miss a sign, or not be sure if this is the sign you should be following in your situation, or otherwise get confused in train stations, airports, etc.. Having an actual person there showing that yes, this is where you should be going, and even help you with questions if necessary, makes things that much simpler and more comfortable.
I'm not demanding products which harm the environment made using methods which harm the environment. Businesses make the choice to produce those things instead of carbon-neutral environmentally friendly products, so they are more at fault than the individual who buys the thing. It's extremely difficult for an individual to be able to uncover the environmental implications of everything you buy and do. The only real solution is to pass laws which properly account for the harmful externalities in the production cost, such as carbon tax. That will steer both businesses and consumers towards more sustainable decisions.