I gave the link to Suetonius. Also note the Nero imposter who turned up among the Parthians — the Romans wanted this imposter handed over to them, why would they bother if he wasn’t a threat?
So they knew it was an imposter, not Nero himself. Thus, the percievied threat was an IMPOSTER. So are you saying the Beast of Revelation is a Nero imposter or Nero himself? It can't be Nero himself because everybody knew he was dead. To say the Beast is a Nero imposter pretty much makes the whole argument meaningless