Right, but you're talking about the phrasing of a basic, well-known, ubiquitous dynamic that people deal with all the time. By your standard, it would seem to be likewise dishonest for any store to raise or lower any price without attaching an economics lesson.
Wrong: "Apples are 10% off this week."
Right: "Apples are 10% off this week, indicating that suppliers are generally willing to offer lower prices for apples now and in the near future, so they should redirect near-term production away from bringing them to market, and consumers should look for marginal uses that they can substitute apples into, like snacks or pies."
Wrong: "Apples are 10% off this week."
Right: "Apples are 10% off this week, indicating that suppliers are generally willing to offer lower prices for apples now and in the near future, so they should redirect near-term production away from bringing them to market, and consumers should look for marginal uses that they can substitute apples into, like snacks or pies."
That's pretty much unexpected anywhere else.