I would not put any form of paint protection glaze on a car whether from a dealer or not. I was talking with a car detailer and virtually all these products create a rock hard seal on the paint, in fact so hard that you cannot remove even with a machine buffer. Great you might say it will mean my paint will not get damaged by contaminants and so on, yes maybe. But there is a big downside if the paint gets chipped, scratched, or minor ding then you cannot do a touch up repair yourself, reason is paint will not take properly and will rub off. The whole panel will need to be rubbed back down with wet and dry, primed and re-painted. Personally I think that there is no substitute for using good quality polish and gentle cleaning regularly.
