It wasn't received well due to the bugs
You know, I really love John Carpenter's 'The Thing'. The Thing has a few things wrong with it, especially the end sequence with the stop motion Blair, which looks way worse than the rest of the VFX in the movie. If I were writing a review of that movie, I might say "the VFX in the end confrontation with Blair look really shitty" but that wouldn't stop me from giving the movie a high score, or all of a sudden mean that I disliked it. You are able to give an overall positive review of a product (which might end with you saying something like "is it worth a purchase? Definitely.") while noting that it has some problems that stop it from being perfect, which this reviewer has done.
And you ignore the rest of the article moron. Welcome to the stupid list.
Because the rest of the article is arguably irrelevant in the face of the final verdict. Bethesda's games have always been buggy and it has never stopped them from receiving positive reviews up until Fallout 76 which was finally a breaking/tipping point for both journalists and mainstream consumers, although both parties were less enamored with Fallout 4 than they were with Skyrim, so Bethesda was already on a downward trajectory. You've provided a single source which wasn't even
negative. It's a positive review. He tells you to buy the game. "Bug/s" are mentioned a total of six times in the review - once in the opening paragraph, and then a further five times in the paragraph directly above the final verdict. In the very first paragraph, it's said that the game "avoids any major blunders". Features endemic of decline - the tutorial that thrusts you into the main quest, the quest compass, the fast travel - are met with glowing praise and said to "make Oblivion a great title for anyone still wary about RPGs". Even with all of the skills and systems culled from Morrowind, it supposedly has "depth and gameplay options" that "may be daunting". He thinks the persuasion minigame is ENGAGING, for God's sake.
I'm left wondering if you have actually read the review, or whether you simply googled "Oblivion bugs review" and clicked on the fifth link because you saw it mention "frustrating gameplay", which doesn't really come up again in the view, by the way. He singles out a few skills as being "useless" (Acrobatics and Athletics) and says that you shouldn't select Luck as a primary attritube because it doesn't directly affect anything. I bet he loved Skyrim after it got rid of these.
9.3/10 is not a negative review.