And the sky is falling too.
I just read through my manual; '17 RT, and it does NOT say that E15 will be bad for your engine. It says to not use it because it is not Government approved....yet.
It does say to not use E85 and to NOT experiment with other concentrations.
So it appears to me that the newer models at least ARE designed to be used safely with E15.......if and when it becomes legally available.
My Toyota says E15 is fine, right on the gas cap.