I don’t know if any specific blogs that still operate in that sort of space, but I will say I’ve had luck with finding folks on letterboxd who put care and thought into their reviews. Admittedly, you still have to sort through a lot of "this was good! I liked it!"to find those reviewers, but it’s not impossible. My starting spot was looking up the hosts of some of the movie podcasts I listen to (shout out to Blank Check and Eye of the Duck) and then seeing who they interact with on the platform, checking those folks out, and so on.