The problem is you need capital to begin with, and the median American barely has enough on hand to cover an emergency, nevermind build significant investments.
Many of us might be fortunate to have well paid jobs, and the ability and capital to invest, but it's understandable how someone could view the ability of those with capital to generate further capital without any labour to be unfair.
The median American buys new cars, so they could by a used car and invest the difference.
I've known many people who didn't have any cash on hand, yet lived high on the hog with expensive clothes, new cars, and nice houses. They didn't have any cash on hand because they spent it as fast as possible.
If you want to sit on the sidelines because it's too risky for you, that's fine. But don't then complain that others make money on stocks.
You, and anyone else, can buy FAANG stocks, index funds, or whatever.