I don’t see this as a huge problem around where I live but I have a friend who travels in SE Asia and she says the huge numbers of plastic bags hanging from trees is unbelievable. It gives the landscape a surreal look. Some people are slobs. I know when I was a kid (many years ago) I always threw stuff out of the car window. If I can be retrained, anyone can be retrained.
HA.....I “retrained” a kid once......was walking by the car when she threw something out the open window of the parked car she was sitting in.....went back, threw it back in the window, and said, quit throwing your litter in my neighborhood.....she, and her little brother with her were QUITE surprised.
The very first time I ever saw these bags was in Chinatown in NYC back in the 70s. Produce markets were using them.