"non-standard" != "need to enable ads"
Whether you want to call that an iron-clad rule or not, the face-value version of the article, and the general gist of the reactions from the comment section seem to be much closer to the truth than your portrayal of it as an "unrelated and false pet peeve."
Those seem to be the Blender team's words, not YouTube's.
This is an actual quotation from Youtube support, unless you're suggesting that the Blender Foundation is lying. If what an employee of Youtube says about Youtube while representing Youtube can't be taken as evidence of Youtube policy, what can?