I mean, just list the top 10 tiktoks ever, or even top 100... rank them on metrics like content, depth, purpose, knowledge. Then compare them to other platforms or content formats. It'll rank quite low.

Of course if you rank it on other things like stickiness/addictiveness, fun, humor, aesthetic, novelty etc, it'll rank perhaps quite high for what it is (3-10 seconds usually)

I think in the end it really depends what you're looking for when deciding whether something is low-quality noise.