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It's a bit difficult to evaluate Geoff's entire library of videos, but I'll try to comment on some of the recurring trends. Some of his more positive reviews, such as A Place Further than the Universe, do a fairly good job of covering all the positive points of a series.
My greatest complaint is that Geoff seems to be obsessed with Sword Art Online, having made several videos that say SAO fails in almost every way imaginable, with another video halfheartedly conceding that maybe he can understand why it's as popular as it is. Granted, I'm biased, considering that I like SAO despite acknowledging it has flaws, but after a while, it gets tiresome to hear Geoff bring up SAO in videos that aren't even related (e.g. the review of No Game No Life), or complain about how bad a writer Reki Kawahara is when he's apparenly never heard of the significantly better Accel World.
It isn't just SAO, either. The negative reviews of Kakegurui and Detroit: Become Human are highly acidic, and I say that as someone who doesn't have much interest in either of those works. While I'm more inclined to agree with his review of Persona 5: The Animation, it seems a bit premature to release a review three weeks after the anime starts airing. A well-written argument can potentially win over someone who disagrees with you, or even convince that person you have a point, but Geoff has yet to manage either with me.
It's possible that the problem is that I have yet to see a review that isn't overwhelmingly positive or negative. Perhaps if Geoff did more videos of works that he liked in spite of their flaws, or thought had good points even if he disliked them overall, his reviews might be more even-handed. As it stands now, I can't especially recommend Mother's Basement unless you happen to agree with Geoff, and there's little more boring than just limiting yourself to reviews you agree with.
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