People do talk about all those things. There are plenty of groups dedicated to each of those things individually or which include all of those things in their mission statement.
Unfortunately, we live in a world where getting even the most basic policy changes to protect the environment is a herculean effort, so people rationally focus much of their attention on the largest or most urgent things.
If you had a friend who was playing with Uranium, smoking cigarettes and eating food with artificial colors, it'd be fair to say they should stop doing all of those things to avoid getting cancer. But it'd also be fair to focus mostly on the Uranium.
Unfortunately, we live in a world where getting even the most basic policy changes to protect the environment is a herculean effort, so people rationally focus much of their attention on the largest or most urgent things.
If you had a friend who was playing with Uranium, smoking cigarettes and eating food with artificial colors, it'd be fair to say they should stop doing all of those things to avoid getting cancer. But it'd also be fair to focus mostly on the Uranium.