The courts already distinguish "commercial speech" as a class of speech. Would we prevent all forms of commercial speech? What about a waiter asking you "would you like to try a rosé with that dish? It pairs very well together." Is that "advertising" that would need to be outlawed?
What about giving out free samples? Is that advertising, and thus should be illegal?
What about putting a sign up on your business that says the business name? Is that advertising?
I hate advertising and propaganda. But the hard part IMO is drawing the line. Where's the line?
If a company sends you a free sample in exchange for writing a review, and you get to keep it regardless of your conclusion, is that a payment? If so, that shuts down a way for consumers to get reviews of products before purchasing, but if not, the company might find various non-payment ways to influence what the reviewer writes.