Any polish with the slightest abrasion will remove their paint protection unless its something like "Opti-Coat" or "cQaurtz" which can be polished with a very slight abrasion without removing it and cannot be removed with even heavy chemical cleaners.
Unfortunetly most of these paint protections from dealerships are nothing more then a synthetic wax (polymer, ptfe etc) and can be removed with chemical cleaners thats why they say it can only be washed with a gentle car wash otherwise you will void the warranty, most even specify that you must use their products to maintain it. Theres one particular product that contains Titanium Dioxide that is sold through dealerships Australia Wide and they market it saying that it contains Titanium Dioxide Ti02 so its "self cleaning and breaks down dirt", thing is Ti02 is just a pigment that is a UV Reflector thats used in sunscreen, doesnt really have anything to do with durability or self cleaning. Last time i checked my sunscreen didnt perform self cleaning on me.
So the whole paint protection package is only worth whatever the written warranty terms are as the products are quiet average, I love when people tell me a dealership has told them their paint protection package includes repair of damage, because how far does this damage extend too? whats exactly covered and if the car is absolutely covered in bird poo etching and needs a full respray are they going to pay for it? I doubt it, what comes with paint protection is a "Warranty" not "Insurance", the "Warranty" only extends as far as the product they are selling, same as everything you buy that comes with a warranty, its not insurance.
It was only today i had a client tell me the dealership told them their leather protection covers the seats for a lifetime, so if they start to wear even in 10yrs time they will replace them. Luckily the client was smart enough to know a "liquid" protection product on a flexible porous surface will not protect against wear and also wont last a lifetime and "will" need to be reapplied regularly, (they also told him its a once off application and needs no reapplication within a lifetime). Unless its written in writing their verbal sales pitch means nothing and im yet to see one that has in writing they will repair affected paint work or replace interior parts if they are worn, even if they did they would argue that you did something that voided the warranty, it was out of their control or the protection was no longer present!
I hope for your sake they are inspecting it annually to ensure the protection is still present for your benefit, however from your post above you sound smart enough to know if the protection is gone or not.
Sorry to hijack the thread!