That's not advertising by any standard, unless they're being paid by someone to do it (whether they currently are or not is irrelevant). Just because someone can benefit doesn't make it advertising/propaganda, it's about the whether the funding comes from someone who benefits from the particular content.
As another example, Good Mythical Morning and other YouTube shows frequently do product comparisons / tests. That clearly isn't advertising, unless the companies who make those product are sponsoring them.
