Author here. The point here is not the trash, I go by those bins twice a day and can affor to think a few more seconds if I am carrying something unusual. Plus it makes you feel like you are part of a bigger cause to put near-zero effort to help save the planet.
The point is software. There I should not spend a fraction of a second thinking, because that does not happen twice a day. It happens every 15 minutes if we are talking about me looking at my phone. UX thinking there makes a real, tangible difference.