Despite owning such an arsenal of stripping products you say you see no need for their use at all in shoe care, ever. I wonder then what prompted you to own and use these products?
Also my original post queried your questionable statement on renovateur which I notice you have not been able to defend.
There is a lot of excellent advice and sharing of experience in this thread, I am merely trying to ensure that continues without exaggerated statements and poor opinions with no basis in fact. I hope you understand.
I have experimented with both stripping away shoes finish, dying shoes, and creating patina. All of which requires strong deglazing agents. None of them were used for 'shoe care'.
The only exaggerated and outlandish recommendation is to use such strong deglazing agents on a regular basis or even on a brand new pair of shoes to 'care' for them.