The Pledge that I am using is not the regular Pledge, and from what I can smell of it, it has no lemon scent, just some type of extra polishing agent. I know that when I wipe clean whatever I am using it on, it leaves no smudging or sticky feeling behind. Everything feels more like resurfaced ice without the wet feeling ice has, and no build-up.
I used to use Johnson's Klean N' Shine and everyone told me that the silicon in it is not good for the finish. In abou 40 years of using it, I never had any problems with it. I was pissed when production was stopped. I then called Johnson's and ordered it by the case for remaining supplies, until that ended.
I then found that Pledge works almost as good. I don't use much at all on the body, and try to just wipe it down with a clean dry cloth. The neck and strings however, get constant attention from the Pledge.
If it is doing harm to the guitar, the guitar has not made me aware that it is being harmed at all. And!, I have not received and law suits from the guitar, or a cease and desist order, so who know's?!