[Retric]

Advertising has specific legal limits on what is deceptive. You can say ‘worlds best’ because that’s considered a subjective and meaningless statement, but lying about objective facts gets you into hot water. For example, peanut butter is legally required to have been made from peanuts.

[ficklepickle]

It is called "puffery"[0], for anyone who is interested.

The wikipedia page says a "puff piece" is journalistic puffery. Neat, I hadn't made that connection.

[0] https://en.m.wikipedia.org/wiki/Puffery