I agree that RMT becomes a bigger problem and SE should definitely do something about it.
I absolutely don't like these Eureka Bunny Farm Bots.

But, I don't know about your PF wipe theory.
At least I've never encountered such a behavior on the Light DC PF in SB and SHB.
But I also haven't raided via PF in EW, maybe that became a thing because they are not allowed to advertise their carry groups in-game anymore.

But yea, SE has to find a way to punish RMT buyers. They can't win a fight against Bots but they can reduce the earnings of them by scaring potential buyer away.