Not sure about a public health problem, but it certainly can be indicative of a personality disorder. Talk about your narcissists and exhibitionists! I like to watch YouTube decorating videos, but when I see it’s going to take some woman 25 minutes to tell how she redecorated a 2’ x 3’ closet, I know she just loves to hear herself talk, and I watch the “before” segment, then fast forward to the “after” segment, if I watch it at all.
Good strategy.
I’m the same way with auto-based shows; seen an engine rebuild 100 times, seen most all of them, and the engine shop poseurs would do well to watch those other shows, and not repeat what 50 of them have already shown.