Was Sonic 2006 a terrible idea or just terribly executed?

Allow me to explain, this game is considered one of the worst games of all time. Most of the backlash tends to be because of the absolutely abysmal loading times, broken game mechanics, and buggy interactions. In fact my save files alone got corrupted half the time.

However I'm not entirely sure the idea was all that bad. Yes it's a different tone, but it reminds me more of a modern Sonic adventure.

What say yall? With the new Sonic movie out this made me think of this, plus I never really hear people speak of the game other than the obvious issues. Tho I suppose you can't judge the rest of the game because of the obvious issues