I agree. The best film critics (and I agree there are many who aren't worthy of the label) have encyclopaedic knowledge, an understanding of who the film is aimed at, and will at least make a good attempt at reviewing the film objectively, whatever their genre preferences might be. The very best will do so entertainingly, if their audience is the general public and not highbrow cineastes.
I see a couple of people have vouched for my reviews in these comments, which is humbling and encouraging. I've never been a full time professional film critic, contrary to what some may think (despite occasionally writing for The Guardian and other places about film), but I started these reviews, twenty plus years ago, simply so my friends on email could see my thoughts on new releases put more succinctly, instead of me having to have the same conversation over and over again. This snowballed, and now I run regular reviews on my blog and Medium (in addition to the occasional professional publications). However, my primary focus is fiction (novels and short stories), so again, I never call myself a film critic per se.
At the risk of sounding like a snob, I don't think most of the so-called film critics you mention on places like You Tube are really critics in the traditional sense. More like pop culture pundits, if anything. For me, a good film critic is someone like Peter Bradshaw, Wendy Ide, or Mark Kermode, who bear in mind the criteria for good film criticism mentioned above. I don't necessarily always agree with them, but they make their case well.
Personally, I rather liked Elemental. I didn't think it was a masterpiece of Inside Out proportions (my favourite film of 2015), but I thought it was nonetheless well animated, funny, and poignant. I almost shed a tear at one point. :)
All my reviews can be found at Simon Dillon Cinema here in Medium. (Below, if you're interested.) Sorry for such a lengthy comment. :)