Those with TradingView are no different. They aren’t some Wall Street traders who post their best trades online and get nothing in return. They are just people who are posting for fun and get people to follow. However they are never profitable in the long run.
I have seen some copy traders are consistent performers. Their last few month's performance was amazing and their followers are massive. I don't think all of them are just bullshit, if they are then their career should have ended after one or two months. This is not the case for all of them. I agree with you that most of them are just a salesman but pro traders but some of them are really amazing.