<b>Mass-deleting old videos may be hurting your channel health score</b>

<b>Mass-deleting old videos may be hurting your channel health score</b>
Word is there's an internal channel-level quality signal that reads your historical consistency, and a source warns that purging a big chunk of your back catalog at once can read as instability rather than cleanup — temporarily denting how your new uploads get distributed.
For a channel like yours: if you must clean house, set weak old videos to unlisted instead of deleting, and do it gradually. You keep the historical watchtime credit on your channel record while removing them from public view.
Confidence: low-medium. Plausible, hard to prove, low downside to playing safe.