Splenda was originally marketed as "coming from sugar and tastes like sugar". They lost a major court case in 2007. On the topic of Mr. Peel's diabetes, we were told by his doctors and hospital staff to go "sugar-free". That turned out to be a massive misdirection. He can digest raw sugar and raw honey just fine. He cannot digest the synthetic, man-made sugars very well at all.
The other great marketing lie you'll see these days is the use of the word: "natural" as in "100% Natural". When you read the actual label, you'll find that there's everything in the product BUT naturally occurring items.