The implication of your comment is that the description/review/opinions expressed by Ben in that video were inaccurate due to having received the printer for free. Is that what you're suggesting?
It being an ad does not imply that it's a lie.
In fact historically lieing in an ad could get you lawsuits or FTC complaints. I know creatives at agencies who would have to go through legal review to ensure every factual claim they made was true.