The thin line between an exploit and scam is this explained well here
You should read the contents of my reply, I never said it was a scam but manipulation. An exploit would be finding a glitch, but when you create it yourself it's manipulation, imo at least.
I was sharing similar ideas as the reply you linked, but with different words;
There was intent in this case to move the odds in their favour assuming both individuals were working together. It would count as market manipulation to me. An exploit would be taking advantage of an existing flaw. A scam would be to use dubious and sometimes criminal means to cheat a system.