This is the crux of it for me. A good critic will be of great use whether their tastes align with yours or not.
Critics feed ideas to those that attend parties so those can have an opinion to express when they feel no confidence in their own taste. Critics are Cyrano de Bergerac.
And every decent reviewer makes an effort to lay out the facts in front of you and try to be somewhat objective, or at least account for diverse tastes, for a portion of the criticism, so you can reach your own conclusions.
There are tons of excellent full-time critics that know what they are doing. They might not sound as scholarly as in the past, but that was mostly a stylistic choice and I'm skeptical about there being much more substance behind the flowery language.
In most of the (big) YouTuber movies and TV shows critics, I have a very hard time knowing what is their taste and what is a piece of art.
I think in the future the role of a critic will be more to the technical aspect of the piece, and how it fits in their lore than something related to the taste specifically.
In my case, I cannot watch most of the modern TV shows 'cause most of them lack good cinematography, character development, and sound which are important aspects for me in terms of immersion and engagement. Most of the shows today with CGI, only closed camera takes, and lack of external shooting look like sitcoms of the 90s.
That's I think most of the Youtube Critics channels lack, that kind of nuance around those technical aspects.