Well, as much as I lean toward stock, Dy rally isn't doing anything that couldn't be changed back, it sounds like just bolt on stuff for the most part. So if his kid gets the car and wants to make it stock it could be done.
Anybody can do anything with a car they own is true, I just prefer most owners don't make mods to the cars that are more than paint and nut and bolt items.
I am not very old but have seen my share of fender flares, cut up floors , and sun roofs installed, and thought each time.."man thats to bad" . IMO hotrods lend themselves to these ideas, they look like more of a blank canvas to me. To the 80 yr old guys though maybe they like those all stock.
different goats for different folks I guess