#Amtheyst supports connections through Tor & if several npubs connect through the same Exit Node, that is no proof of anything.

To be honest, generally speaking (not specifically talking about you), people overestimate the technical aspects waaaaaaaaaaaaaaaaaaaaaaaaaaay too much & hugely underestimate the social engineering stuff.

For example, instead of thinking about IP addresses, VPNs & npubs, you should rather think about the language, grammar & dialect you use on different accounts.

If you use your original idiolect on every account, you might as well connect with your real IP & have it on the same account, because an AI can probably link those accounts within seconds, if you have a very specific idiolect & use it the same way everywhere.