Almost, but that's the gist. Letting people know about your product creates value if and only if the product itself brings them positive net utility for buying it and there were no other even better products that you distracted them from. Convincing someone to buy your product doesn't show that it's actually good (surely you have regretted a purchase before).
Additionally, essentially no marketing is a dry list of facts informing people of products to help them make rational choices. A great deal of marketing contains no explicit facts at all. A large amount of effort is spent getting people to buy things they don't even need (or worse: harms them) and/or throw out perfectly usable items they already have or otherwise participate in conspicuous consumption, which is frankly quite grim against the backdrop of climate change being a (the?) top problem being shouldered onto our successors.
Additionally, essentially no marketing is a dry list of facts informing people of products to help them make rational choices. A great deal of marketing contains no explicit facts at all. A large amount of effort is spent getting people to buy things they don't even need (or worse: harms them) and/or throw out perfectly usable items they already have or otherwise participate in conspicuous consumption, which is frankly quite grim against the backdrop of climate change being a (the?) top problem being shouldered onto our successors.