Glad you said it ... I agree. The current owner will sell, someday, with the clear understanding this is a 'clone' (sorry, 'tribute,' or 'replica' is being too kind; has Frank Luntz gotten into the vintage car sales business?). Then, that buyer will sell down the road and forget, unintentionally or otherwise, that the car is a clone. Lawsuits may ensue (or, the buyer who got burned turns around and does it to the next guy).
The other trend that bugs me that is apparently becoming commonplace is stating 'mileage' of a car since restoration. I've seen quite a few ads for Healeys for sale stating 'Only 1,500 miles!*' with the asterisk saying '*since restoration.' Often, the asterisk is missing. Sort of like taking a shower and getting a makeover and claiming your virginity has been restored.