Frankly, the mere introduction of Fortune Cards, alone, gives the lie to the assertion that Essentials is meant for a 'simpler' gaming experience. Fortune Cards add another phase to your turn, and a new dimension to optimizing your character. Not exactly slaying the complexity dragon, there.
The results of the poll were illuminating. About 70% rejected not the Essentials fighter, but a hypothetical fighter that /remained perfectly balanced/ and 'didn't feel overshadowed,' even while being stripped of options. So it was a hypothetical perfectly-executed, extreme form of the E-fighter that was rejected - soundly.
About 15% liked it, and the other 15% didn't really care. (actualy numbers were 71.1%, 14.5%, and 14.4%, for any purists out there - yes that's combining certain responses)
Then there was the left-field gnome argument. Really just a re-hash of the "ah just wanna hit da orc wit mah ax" annecdote. OK, there are some folks who claim they want to play optionless Fighters - quite specifically, never optionless sorcerers or clerics or whatever - so let's cater to them. Well, if that were the case, then there will be no need for future support of the E-martial classes, they're simple, you wouldn't want to make them more complex, and those folks should be happy with them, just as they are, evergreen and unexpanded, for the remaining life of the edition (even if that really is more than a year or two).
OTOH, if WotC continues to dive full-bore into creating simplistic classes, and supports the E-martial classes instead of the real martial classes from the PH1, well, that's not just catering to some folks that want a simple fighter. That'd be changing the nature of the fighter (and the game as a whole) over the objections of a sizeable majority of the fans.
Frankly, if you've clawed you way up to cheif developer for the the premier RPG of all time, you may very well feel you've earned the right to shape the game to your personal vision.