I'd like to see the TPGs one day be able to detect when chemicals have been used, just like PED testing has improved over the years....maybe then we will see how people feel when their pristine cards come back as "Altered".
It's your cardboard, I guess do what you want but we all know at some point most of our collections will end up back in the hobby....likely without a caveat.
Spring cleaning comes early to the Plank household...