The confusion I see or hear is mostly because the citizens aren’t invested enough to do better. Unless your county puts out specifics with recycling that’s easy for people to understand, people either throw everything in recycling or just trash it all. If citizens don’t read the signs with rules for recycling, anything goes for them. I feel like in my area, the county explains it well, the citizens just need to do their duty of understanding better.
In the condo community I live in, we have a recycling dumpster to put recyclables in. There is a flyer posted in our common area to tell what should and should not be recycled. At the school I teach, we recycle a little differently, just paper, plastic bottles, and metal cans, no glass.
With things being posted to help us understand, it seems easy to do the right thing.