This is not a scam of any kind. Move your thread to the Reputation section. There's an option to do this in the lower left corner of your screen (while viewing this thread).
You can try finding proof that these accounts are owned by the same person/people. That would help your case.
Well it's kind of a scam, because they have already caused a lot of damage to the community. And who knows maybe they are allegedly trading the FUD that they are creating on exchanges, again I have no evidence for this, but in my experience I have seen many pump & dump scammers behave similarly, they create fake accounts to manipulate the price.
I am not technologically sophisticated enough to do this kind of research, and it's really not my job.
I am a concerned investor in the AMP token who already took a lot of damage due to these scumbags, but unfortunately it's not my job to pursue this matter.
I have just exposed these scumbags, I'll leave the community to decide the next steps.