I think it’s worth saying that they are advanced techniques that have a decent potential for injury. Inexperienced people should avoid them entirely. Even experienced lifters should have someone trained watching them as a spotter. Remember, your back needs to be arched for the entire set. Anything else is likely to cause injury.
I very much disagree about bouncing out of a squat. Maybe while warming up or with light weight it’s ok, but with heavy weights, the safest technique is a steady and smooth motion while staring at the top of the rack to force a straight back.
I don’t understand your point. The most important feature of capitalism is the private ownership of capital. Capitalism isn’t “hustle, fuck bitches get money” or whatever. Money and wage labor goes back to the founding of civilization. It isn’t a new invention.