nah his numbers are actually pretty accurate in that it will generate tons of sales, but it's not taking into account of the devaluation of the gear that is being mass produced due to it being the 'easiest synth" for the rank. it's also not taking into account of npc'ing off 4-500 finished gear is no different than npc'ing 4-500 parts. the same amount of items will be leaving the market via npc as it was before and the only thing flooded will be what people percieve as the easiest synth per level.
the same item not being made and sold will likely be the same type of items not being made and sold whether the changes go in or not.
