It was always going to be a niche game with scores all over the place. I'm playing it now with a friend(not coop, just watching and playing) and it's a classic sequel. More polished and deeper game mechanics. A lot more to do "sim" wise than the first game, but it's definitely more of the same.
I think critics needs to tell what version they are playing when they are reviewing games. They can only review whats in front of them, but readers need to know about a possible day 1 patch. At least mention it in the end of the review.
I'm definitely biased, because i did not encounter any game breaking bugs like the UI disappear, crashes or the need to reload the save. The biggest bug i had was that i sometimes had to push an extra time to interact with people, but that rarely happened and was more of a nuisance than game breaking. My friend did tell me he had to reload his save though. Yes it's janky and there are a lot of smaller bugs, but we both agreed nothing was game breaking. I'm not saying that Eurogamer didn't encounter all the bugs, just that there are others who didn't. People just tend to cling onto the review with the lowest score.
I think it comes down to if the critic likes the game loop or not. They are more likely to focus on the bugs if they don't like the gameplay. You know it's gonna get a low score when the critic mentions "busy work", because there really isn't much to the game if you don't like all the sim/management aspects. The "busy work" is the meat in the game. It's sorta like playing Sim City or Football Manager and not liking the management part of the game.
If you don't like that, then the game is not for you and a low score is justified. But if you like that part of the game, then it's easily a buy now game. 7/10, 8/10 hell even 9/10 is perfectly justified because there really isn't anything like State of Decay out there. There is a huge amount of fun to be had if you are into that kinda game.
I think personally it's a 8/10 game, just because reviewing games isn't just crossing out a checklist and giving a lower score because of bugs. I really don't agree with people saying that a buggy game shouldn't get a high score. If the game shines in other parts, like in the fun department, then it doesn't have to get a low score because it's buggy.
But you could also easily give the game a low score like 4/10 or 5/10 if you don't like the gameplay. There really is no fun to be had if you don't like the management part of the game. It can't be stressed enough. Newcomers might not realise how big a part of the game that is. The gameplay loop is basically find supplies -> manage your base and people, rinse and repeat. If that sounds like busy work then stear clear of State of Decay 2.