PN7 is Quickseller's alt.
OP is a dumbass and has no proof.
Unfortunately both of the above statements can be true at the same time. All this does now is discredit the accusation - exactly what Quickseller needs to continue his march into DT and into Chipmixer campaign.
Agreed, the OP is stirring shit as result of his butthurt for red-tags. But I certainly hope no one adds PN7 to their trust inclusions. So far I haven't seen PN7 try to do any trading or earn trust, so I hope that's not something we need to worry about.
If PN7 truly is QS (which I believe to be the case) and his goal is to rank-up and earn signature bounties, I really don't care, and wish him luck. Considering that QS has a history of account farming and selling accounts this would be the least of our worries. Also makes it seem like the PN7 account was an inevitability. It was just a matter of time before the more intelligent account farmers figure out how to work within the merit system.
If PrimeNumber7 has posted a wallet address for their signature then follow the money.
This seems like a shot in the dark, I think he's smart enough to obfuscate any blockchain connections. And is it really worth the effort? The connection seems pretty darn obvious.