Mistakes during initial canvassing happen. That’s why there are recanvassing procedures. The Wisconsin Supreme Court race a few years ago is a good example. One county left out thousands of votes and it flipped the face to the GOP the next morning when the mistake was located.
Antrim County is a great example of the system working despite the machines. Local election officials discovered the mistake and fixed it. If it was all rigged and not traceable then the mistake would never have been fixed at all.
There was uncorrected hanky-panky up there. The machine count in Antrim went wild in the streets for some reason and was TOO noticeable - but those other counties should have been checked, too.
BTW - the downballot races in Antrim never matched in three separate recounts...