You are moving the goal post, nobody claimed such. It's shit like brokers (who are deriving benefits from hft and pfof) refusing long orders on certain stocks, ever more exchanges that enable hft with their faster lines to frontrun orders on multiple exchanges at the same time,and many other shenanigans. There is no central marketplace, its a completely broken system that only works for the few and disadvantages the many. And I directly worked in this space not for 9 months but for over 9 years.
The HFT guys aren't the reason the APE's have lost money. Buying bankrupt movie theatre's is.