The post you replied to gives no support for the claim, and simply does not address the Trump-Biden election. That post deals only with how the machines "were compromised as a result of the audit conducted by software company Wake TSI" and therefore could not be relied on to produce an accurate count in future elections. It says nothing about their accuracy in the 2020 election:
"the machines had been compromised as a result of the audit. She said neither the county, state officials, nor Dominion Voting Systems could "verify that the impacted components of Fulton County's leased voting system are safe to use in future elections."
The Secretary further said the audit in question was taken in a manner that was "not transparent or bipartisan."