Yep, most dealerships don't know jack about the actual features of any of their cars honestly. I initially was 100% turned off from a 5th gen 4R because the salesman told me I could only get them with either a 3rd row or a slide-out tray (i.e. no option to have NOTHING), and that stuff like that was usually a gimmick for Toyota to make money.
Same dealership, when I test drove an FJ (just for fun, it was after I bought my 4R), the sales lady didn't know if it was a V6 or a V8. I knew but I asked just for kicks. She just talked the entire time about how it "felt" smooth driving. Now if I ever go test drive a car at a dealership I politely ask the sales person to remain quiet so I can experience it all for myself.