Considering that Ford, GM and Chrysler offer V8's in a range of new cars, I think its Ford using the 2016 GT to showcase their Ecoboost engine rather than some plot to rid the country of the V8 engine.
I would further posit that CAFE standards and emission rules have forced the carmaker to improve the design of the engines to the point that we now enjoy (the GM LS series / Chrysler hemi for example). The new engines are immensely more reliable, have long warranties, get far better gas mileage, put out more HP and require little to no maintenance other than oil changes. How is that a bad thing?