Somehow they managed to take the iconic optimus and give him moving lips and transform into a gorilla... AND make it something great.
Please, at this point it's superficial quibbling. The people behind transformers have reinvented Optimus so many times now that it's the norm. This is another iteration of the franchise, and another iteration of the character. Like all others he'll have a look unique to this particular part of the franchise. Despite untold numbers of reinterpretations of the character, Optimus is still wildly popular and revered. And the reason he is revered is not because he's the iconic Optimus in alt mode, driving down the road and being something that fits in. He's Optimus when he sheds the disguise, steps up as a leader, and fights with honor, dignity, respect and compassion.