It had a terrible story, yes, but it honestly had some of the best gameplay seen in the series. And the story wasn't even that bad. People just got fussy because they think Samus was made unnecessarily subordinate, and a huge bandwagon started. I don't know. It never bothered me, and it especially didn't take away from my enjoyment of the game.
(As it so happens, most of the people who join in on hating the game haven't even touched it.)
That is your opinion and all, but no way. I don't even give a crap about the story, it was bad, but I can ignore a bad story if it is a good game, but Other M isn't a good game.
It was a linear game with auto-aiming, terrible controls, tap-dodge making things ridiculously easy. Then there are the pixel-hunting moments.
Not to mention the fact that its music is unmemorable and the poor visuals (from a technical sense, they are really good for the Wii, but design choices make it bland and look bad).
Every other Metroid game has much better gameplay, story, music, and visuals (except maybe that DS game, but I never played it). It is the poorest entry in the series.