It's clear you're one who enjoys a circular argument so I'll just leave it at this for you. I don't need to know the exact right amount of money these people should be paid to know that $1.32 per hour for looking at child porn and violent imagery is too little, especially without the requisite mental health resources available. If you are so sure this is a fair situation, maybe for your next job you'll accept minimum wage pay doing similar work.
It isn't pictures, it is text only. I think there is a huge difference. I had to police content for Twicsy (a search engine with 10 billion Twitter images indexed) and I have seen some very bad stuff. There is a huge difference.
This is just false, if you read the article Sama also collected explicit, illegal images on behalf of OpenAI -- this was the reason the contract was cancelled.