I have an idea, ask me for more money and I will gladly pay for trash companies to sort my garbage. F them for trying to force me to do their job. Hire an army of hobos and inmates. I don't care.
It's just much more difficult to separate stuff after everything is mixed up, like it says in the article.
Most European countries show that it is possible to do much better. I have to separate plastics/cans, glass, paper, vegetables and non-recyclables (5 streams). And the occasional batteries/electronics. Really, it's not that hard, if you furnish for it. In my household, the non-recyclable waste has shrunk to just one garbage bag every two weeks, for a family of four.
And still I think much should be improved, starting with much stricter regulation for packaging. We still dispose a lot of plastics, around 3 medium size bags every two weeks. Just forbid (or tax into oblivion) single-use plastics entirely, and let the food and retail industries innovate their packaging/distribution/fulfillment using paper, carton, bio-plastics, glass or re-usable.
Much should be improved, and everyone should play their part. Maybe there is a startup idea servicing people who just refuse to do so?