The electronic machines had no bearing on the 2020 fraud. Almost every jurisdiction that used these machines were only using them to tabulate the results. They still used paper ballots, and those ballots would have shown the same results no matter how many times they were re-counted.
Yes, the machines are just fancy adding machines, so they would have the same result as a hand count.
The difference is, that upon being entered into the machine, the digital representation becomes the official ballot, and the physical ballot is put aside.
Let’s say you have a batch of 100 ballots, 51 for Biden and 49 for Trump.
Let’s say the physical count matches the digital count, but half of the physical ballots for Biden are missing their signature or are otherwise improper.
The problem auditors in AZ faced was that the ballots are not serialized such that they could pair a particular invalid paper ballot with its particular digital representation, and thus could not specify which particular digital ballot was invalid.
Obviously, they did this deliberately to destroy the audit trail.