I have been watching both Carey's and Linus's videos for a while , Carey is a great tech, that being said , he does believe that he holds a far better understanding of tech and where you should go to purchase the tech , he hardly does review like Linus does , and YouTube isn't really what he does full time,Carey never has said that he makes computers for people on YouTube, the builds that he does are from other people that provide parts and ask him to build it , if he likes the build he builds it, His videos , while long are actually informative and can actually help you in your future purchases when it comes to tech, like which companies to buy from and which to avoid , but he never directly bashes on any companies , he just says that in his experience he has not had a good time dealing with such companies.
Now when it comes to Linus he gets tech from companies and gives his review on them , never have i seen Linus give a full 10/10 on any product,he might recommend buying some of the products that he reviews but will not oversell it if it actually is bad , but if companies hand him tech that he thinks is bad he doesn't review them, or gives them a bad review and doesn't recommend them.So that does tell me that he is not biased completely to whom he gets his tech from , but rather does or does not recommend them .
Both Linus and Carey are right in what they do , but i do think that Carey shouldn't have said that Linus was a bad or biased reviewer, Carey was mislead about Linus and i do not think meant anything bad.