If you're a content creator trying to build an audience, it definetly hurts when people already saw your content elsewhere.
To quote your ggp:
> [re-uploading videos] _may_ classify as copyright infringement. [downloading YouTube videos] definitely does not.
And your gp:
> [Downloading YouTube videos] violates YouTube's terms of service and hurts the artists.
And your parent:
> Evidence required.
So... why are we talking about re-uploading again as if downloading was the same thing?
If perfectly legal, permissible, expected and ethically justifiable behaviour hurts your bottom line, your business model is broken, not your customers.
If you're a content creator trying to build an audience, it definetly hurts when people already saw your content elsewhere.