Yeah, there's just no way a credible review of anything without imparting your own bias, opinions or politics into it. A bare review or summary is exactly that - a summary. Ebert excelled at sharing his opinions and the ideas that sprung forth from the interaction of those opinions and the movies he watched to review. It's something of a lost art form in this day and age of the blogosphere where just about anyone can write what they think constitutes a "review."
Besides, if anyone is going to have to kvetch about the electricity on the starship Enterprise, I'd think Ebert would have earned the right to do so ages ago.