Diablo fans HATED it. But game journos loved it.
I was a big fan of Diablo, I was a bigger fan of Diablo 2, in fact I was an early tester of Diablo 2, Blizzard actually mailed me a disc with the game on it (the days before we could easily download games!), a year before it came out. And I LOVE Diablo 3, and think it's an improvement over the others. And I know others who feel the same. So it's not universal that Diablo fans hate Diablo 3. It's mostly just that the ones who do hate it are really, really loud about it.
As for the topic at hand, I still think that professional news outlets have no business reviewing or putting a score on an UNFINISHED game. Only independent YouTubers and such should really be doing Early Access reviews, in my opinion.