Payment for order flow can certainly be controversial among people who understand the market. Also, there are plenty of people who understand the market who fin

Payment for order flow can certainly be controversial among people who understand the market. Also, there are plenty of people who understand the market who find the concept of the market controversial. Your circles might all be comfortable with PFOF, but I wouldn't say it is controversial only with those who don't understand the market -- it's dismissive of contrary opinions.