I mostly agree but my argument against “rules” is that these things never seem to be unilaterally enforced. So it really is more like a guideline because enforcement is unpredictable in several aspects.
Everyone has a completely different view of what the site is depending on what your interests are.
YouTube don't care as long as it's not publicly known. Hence the community part I suppose?
It's no moral high ground but it's not illogical from that perspective.