The message is sound. I think the tone slightly paints men as a whole in a bad light, as if it needs to educate all men to be better. I think that's offending some folks because it's perceived as a generalization, but obviously their message is a good one.
From a marketing standpoint, they seem to be alienating their base, at least those online. However, the internet culture is not really indicative to reality. I always use Gillette Fusion because it does a good job on my face. Whatever ad they put out is completely irrelevant to what I'm going to purchase. Their shavers are the best, plain and simple.
My only gripe with them is that their Gillette Fusion shavers are really expensive. About 20 bucks for 4 razors :(