That analogy doesn't work; the dead body doesn't exist (a statistical anomaly isn't a dead body), and the VPN, in generalized terms for this analogy, is more like a locked door to a house. A number of people may have the key, but you don't know whether someone used one to get in and commit a crime, or even if a crime was committed.
I think we all agree that electronic voting machines shouldn't be connected to networks (if used at all), but the VPN feature, while being extremely suspicious, isn't evidence of a crime. You'd have to show that the vote tallies were changed. If it's an electronic machine that took scans of paper ballots, then the machine votes could be audited against the paper records. If voting was inputted electronically, you will likely have no way of knowing nor proving that the votes were manipulated, particularly if the perpetrator knew what they were doing. Same goes with remote access: if you can't prove someone accessed the machines remotely, you have no evidence of a crime and anyone that knows what they are doing won't leave a trace. This is very easy to do if you have knowledge of the machine, particularly if you developed the machine, or even if you simply had physical access to one. NSA should have data on remote foreign access, but if I'm a foreign adversary, I would just launch my attacks from machines inside the US.. in fact, if I was manipulating votes for democrats, I'd stage my attacks from a machine at the RNC so that they trace it back to there
. Biden has been in government for decades, so I will conjecture that he has many powerful connections in all parts of the US government, so I think it's plausible that if the votes were manipulated, it was a domestic job.
The bigger question here, though: is this election fraud enough to start an uprising? This election takeover was blatant: "we cheated and there's nothing you can do about it..so join us (it's time for unity) and accept it as we build-back-better (communism)". The dominoes leading to socialism in the US have been falling one-by-one... the only thing left to take from us are our guns and that's usually the last to go before socialism is activated.