I agree with you that there are few 'centrists' when it comes to opinions of f bodies (especially latter 3rd & 4th gens), and that they obviously did not sell like the original 'pony car' (Stangs).
Part (at least) of the blame for this has to be attributed to GM, and their ad agencies.
With the exception of that one 'voracious' 4th gen Trans Am commercial (and SCCA Trans Am series racing the early 1st gens), they have
NEVER properly promoted this brand!!!
IF they would have bombarded/subliminally brainwashed the U.S. public with incessant TV (and ALL media) ads like TOY does with their appliances, the story might have a different ending.
I think it was too late to cancel the 5th gen when the proverbial s*** hit the fan for GM very recently.
They had too much invested in R&D/tooling, etc. already and probably just thought, "We'll just take the chance and release it, and hope that it catches on."
They seem to at least be
trying to promote the 5th gen better with TV ads, movie appearences, and that new TV series with Chris Slater ("My Own Worst Enemy").
Besides, just like the last LS1 engined 4th gens, this one gets pretty decent fuel economy for the performance delivered.
Of course, BOTH (mpg & performance) would be soooo much better IF they could pare 5-600 lbs. off of the thing (
without doubling the price!!)!