Unfortunately, they do not go into the downside of this strategy. There will be more false negatives. A sample that was previously on the edge of detection will

Unfortunately, they do not go into the downside of this strategy. There will be more false negatives. A sample that was previously on the edge of detection will now dilute to non-detection in the pool. With bacteria, you can mitigate to some extent by letting the colony grow, but that's not possible with the virus.