The short answer, and why it is unsatisfying
There is no penalty for content because it was produced with a model. Search guidance has been consistent on this for years: the assessment is about whether the page helps the person who lands on it, not about the process that produced it.
That answer is unsatisfying because it does not explain the traffic people actually lost. The explanation is usually one step removed: pages produced at scale tend to be thin, duplicative, unsourced and stale, and those properties are what quality systems are designed to notice.
So the useful question is not whether the tool is penalised. It is which of the four failures on this page applies to your site, and what the fix is.
Everything below is about those failures, not about authorship, because authorship is the part you cannot change and the rest is the part you can.