Claiming on the packaging that the product is 'renewed', without mention the size reduction, seems pretty much deception?
In this case, the relevant information for a buyer is clearly stated, and accurate, and no false information has been conveyed. The buyer simply has to check the unit price and ignore the other words.
Yes, because reasonable regulation requiring clear communication to consumers about product changes == outlawing marketing.
We already have a system. Show the amount of product being sold. Show the price. Require showing unit price, if anything. Any more is unnecessary.
And oh, the horror that taxpayer money might be spent protecting the public. I'm down for that.