I think you're being a bit harsh on the reviewer. Obviously he or she's posting from their own perspective, which may in fact highlight where the game doesn't really make certain aspects very clear. At least 3 of the things you quoted were true, at least for the player. One other may well be true for wherever that player is from (the lag issue). Pointing out that the maps are big is definitely important for some players, especially those on dialup, and especially those who don't have the ability to use MCClient or whatever (which is not exactly intuitive to set up). And saying the history command is useful is no very helpful unless it's been made quite clear to the playr that it exists and what it does. A lot of muds hide away important features, expecting you to read the help file on every command before you do anything.

I think people have the right to review something they've only played for 3 hrs. It's not like they're getting paid for an in-depth review. It's just them posting their first impressions, and if that is evident from the review, then I don't see why there's a problem.