"Designing a system to incentivize sellers to have their lowest prices on Amazon..." so that vendors like the above person getting "the systemic effect that in order for the sellers to get their *sweet purchase orders from Amazon, they now need to raise prices elsewhere" IS intentional!

'Designing a sytem' to 'raise prices elsewhere'!

Probably the person's intent was to protect Amazon, but in my eye this is just providing a very strong real evidence against them now.