There are two machines. There's the touch screen machine that an in-person voter uses. That ejects a printed ballot. That ballot is fed into a scanner which tabulates the votes. Absentee paper ballots are also fed into a scanner which tabulates the votes. The Georgia audit hand sorted the ballots by candidate and verified that count against the count produced by the machine. For Powell's theories about vote shifting by the machines to be true there would have been discrepancies in the hand count versus the tabulation count.
I am neither naive nor a bot.
It’s about the software that produces the ballot receipt, not the hardware. Let the cases go forward before drawing a line in the sand.