And welcome to why i don't trust fan reactions. Also, i can be that fan at times. I have my own biases and blind spots.
For sure, we all do. I just never get the fanboy tribalism that has people attacking critics for having issues with a movie, especially a movie that the fan has not even seen.
Edit to add:. I did complain about the I09 piece on the IMAX pre release event but that was because they were posting wrong info, not because they didn't like it/were judging it on its own merits instead of using supplementary material/future movie contents.
Metacritic Page is now up. It debuts with 78%
https://www.metacritic.com/movie/dune-2020