no emre... ALL manufacturers have given the same statement. And it isnt anything new. They have been "recommending" that ethanol fuels be used at your own risk for years.
and fair enough because in SOME cases there have been issues caused by higher percentages of ethanol being used. Also as you or someone else stated the cars after 04 have been tuned to run on ethanol... its nothing to with the fact that the engine has been redesigned to cope with it... i hardly think they would redesign the entire engine just because of people MAYBE using ethanol fuels.
Its MORE likely that all they are doing is incorporating it into their maps in the ECU, something the pre 04s more then likely dont have.
Obviously if you want to use it... simply tune your engine for it... ive been using 10% blend on the magna for months at a huge saving over normal petrol and had no issues whatsoever. So far done 5000ks on it... will do another 50k and im sure will have a similar report... no issues.
At the end of the day you dont have to use it...