>Make sure that dealers know why you changed your mind.
"Some nerd couldn't use their nerd phone."
What incentive does a dealer have to know or care about this?
You could make a similar argument about voting in democratic elections. It's still important to vote.
What is the risk of letting them know that someone lost trust in VW's features due to a boneheaded decision of their software group and decided not to buy that brand at all?
As a dealer, it would be frustrating especially because it is so silly. Basically, if they report any of this to HQ, it would be along the line of "I am losing the sale of a whole car over some stupid app block".