The great thing with YouTube is that everyone can find their own reviewer they like. I watch MKHB for the extreme production value and "hype"(in a good way). Linus and others provide me with raw power benchmarks. The only thing personally I don't like is apple fanboyism (I can do that my self). I think its great that Apple is called out for their horrible repair and App store policy, I can say that while still loving the products for decades.
I personally don't care about non-upgradable ram and the threat of the closed garden as I feel that the pros outweigh the cons for my usage but I totally get that it is more important for other people. It doesn't make them "haters" or "biased" just because they value other things than I do.