Happy to have it explained to me beyond "you still don't understand", to be told how prop trading (market making and taking, hedging, theo generation, risk analysis, etc.) is not "finance", to read why I'm wrong despite the points I made about how the article has substantive complaints and wasn't merely a Trojan horse for a wealth tax.
I explained it already. The reason why you don't think it has been explained is the same reason you don't understand. I said nothing about prop trading...but you don't are missing knowledge that you get taught first year in a finance course, and you were a engineer...as I said, I don't think you have any awareness about the limits of your knowledge.