Think of it this way. How many people do you see in the parks just staring at a park map with an utterly confused look on their faces? Sometimes I'll see them in a queue and you can hear them talking, they don't even know what the ride is. You can bet they likely don't know much, if anything, about FP+. Or what about people who just walk up to the FP+ tap point and try to walk through only to have to have the CM explain to them what FP+ is...I think some of those people are just pretending and hoping CMs let them in, but many seem to truly not understand. I do think that right now, this is still a bit of a "secret". But I do have concerns that word will spread and/or WDW will notice more people doing it and change the system.
However, that's out of my control and it'll be what it'll be. In the meantime, I'm hitting RnR next week at least 6 or 7 times!!!!! I honestly don't think I've ever done the standby line for that ride...