More explication on Other M...
The reason I think Other M's story is irredeemable garbage is that Sakamoto clearly had no interest in actually building Samus's character, even though that was supposed to be the goal of the game. Just look at how her character progresses through the game. She starts out as uncertain and emotionally fragile, and while I think that's bullshit, it at least is a decent start to a character arc. There are multiple scenes that highlight her issues: She questioned Adam's orders and seemed to have a frosty relationship with him as her superior, she cowers in the face of Ridley, she just awkwardly stands around waiting for Adam to tell her what to do. Nothing is really happening in the plot yet, so this is all set-up. When a strong protagonist is given these sort of personality flaws, the story must center around them either overcoming them or dealing with them.
Unfortunately, Samus never resolves her conflicts. Instead of showing extra initiative or maturity in the Sector Zero scene when she disagrees with her superior officer, she breaks down crying and pleading him not to go. When she is given the mission to hunt Ridley and make up for her panic knocking Anthony into the lava, he is conveniently killed off-camera by a different monster. When she is placed in an uncomfortable command situation with the GF Troopers, she again stands awkwardly in place until someone else (Anthony) takes initiative. All of these things show a lack of progression. Samus Aran at the start of Other M is virtually the same as Samus Aran at the end of Other M. For a game that was supposed to be a character study of Samus, she gets no character development! The game seems to malign Samus in other ways too. Samus does literally nothing of consequence to the main story, instead observing other actors like Adam Malkovich, MB, and even the GF Troopers do every action that is plot relevant. She's the equivalent of Watson in a Sherlock Holmes story, except she's supposed to be the cool hero we look up to and want to be. Evidently, Sakamoto doesn't see her that way. I'm not sure who the hero of Other M is supposed to be for him; Samus's reverence towards Adam indicates he's supposed to be the big good guy, but he's such a prick towards Samus (And by extension, me the player) that I was happy when he died.
Note how none of this has to do with other Metroid games. That's because Other M is shit and doesn't need to be compared to other Metroid games to be recognized as such. But while we're on the subject, Metroid Other M takes every single wonderful, glorious, shining memory of Metroid, throws it in a pile, and takes a flamethrower to the whole lot. Metroid Prime has been my favorite game for 9 years, and it's disgusting that some people would say Prime's wonderfully detailed lore "doesn't count" because of the fanfic-grade ramblings of a former great Metroid director.