People keep saying "this isn't the job of the reviewer is to help the consumer" and "the job of the reviewer is to give advice". That is bogus because the modern review process does this fairly poorly if not outright distorts it to the point that any advice is weak.
Right now I get more insight into any game's performance and behavior from "Let's Play" months after release than I do from a "week before release professional review". I'm sure people get value out of the pre-release review but I'm saying that almost all "reviewers" are passively acknowledging the release issues we've seen in all recent games. Counting this stuff as "outside the review" seems dubious and does not "help the consumer".
So I have no idea why people are so fixated on embargoes. Do you know what helps shape my purchase decisions for Assassin's Creed Unity? Watching someone try to play the PC version, hearing how frustrated they are getting fiddling with the settings to get it to run smoothly, and get hit with crashes in the span of 15 minutes.