Capitalism is not why they are exposed to toxic chemicals as you say. It's the corruption...which won't be solved if we are using some other system.
I lived in Vietnam for a couple of years, very recently. I could drive around with no license and pay police officers some cash if I got caught. Sometimes they would shake people down when they were low on money, especially around Chinese new year. This was also in a big city.
I also wonder what your alternative would be? Your post reads like you are in the antiwork subreddit. Most people have this romanticized view of communism and socialism that we will somehow have exactly what we have now, but you won't have to work (or you will be given a home by the government).
It's funny how many people fight so hard to have someone else pay their bills.