I'm gonna wait and make my own opinion because in my experience, the Metroid Prime games are never appreciated early on because Nintendo rarely goes for the obvious sequel formula of "make same game betterer" and instead goes in bonkers new directions no one asked for.
I recall Metroid Prime being judged harshly becasue it was in 3D and not as platform-heavy as the classic games, and the constant need to scan the entire environment if you want a 100% save file in case you miss that one data log entry hidden behind a crate somewhere.
I recall Metroid Prime 2 being judged harshly because of its light and dark mechanics and completely alien environment that was a big departure from the more established lore.
I recall Metroid Prime 3 being judged harshly because of the other bounty hunters making it less of an introspective solitary experience than previous games, and the heavy emphasis on grappling beam mechanics.
And while I haven't seen any reviews yet because I'm going to see the game for myself before that, I see it being judged harshly because of the futuristic motorcycle, and the talking heads / escort NPCs apparently yapping all the time (that was also a thing in Metroid Other M and Dread, lots of conversations with a talking head).
It might very well be a poor entry in the franchise, I don't know yet, after all it had to be entirely canned and remade from the ground up so that rarely bodes well, but this franchise is now quite dear to the heart of many players and people are demanding remasters of MP2 and MP3 now but they weren't really getting raving reviews when they came out either.
