Your quote is comparing "GTs" to mid-engined exotic sports cars. So yes, they would have a softer ride than, say, a Ferrari F40. It also specifically says that GTs should be able to seat 2, or 2+2. So a Corvette is a grand tourer, as is a Ferrari 456, a Porsche 928, and most Aston Martins. Please note also that your definition says GTs should "provide suitable handling and roadholding on all routes." An underdamped, bouncy rear does not provide either of those.
Seems like you're trying to selectively apply the definition so that only the criteria you want to emphasize apply, thus making the Stinger meet the definition as produced. Let's be real, this kind of suspension design issue would not fly at Porsche or Ferrari, or even BMW or Audi.
I like the car, and it's a bargain given its level of performance and refinement is similar to cars costing $10-20k more, but I think we should all be able to acknowledge when a car has strengths AND weaknesses.
Seems like you're trying to selectively apply the definition so that only the criteria you want to emphasize apply, thus making the Stinger meet the definition as produced. Let's be real, this kind of suspension design issue would not fly at Porsche or Ferrari, or even BMW or Audi.
I like the car, and it's a bargain given its level of performance and refinement is similar to cars costing $10-20k more, but I think we should all be able to acknowledge when a car has strengths AND weaknesses.