I may be off on this one but I feel like the American media or internet was out to get Brie Larson early on for some reason and that negatively coloured the movie for a lot of people. But I may be remembering that wrong or misinterpreting it.
I think there's a grain of truth to that. I think there were two large segments that were sort of "out to get" her or the movie. One segment was a segment that really came across as mysogynistic that was very vocal, despite being a vast minority (as loud minorities tend to be). Then there was also the group of Marvel purists that didn't like a lot of the changes that were pretty big departures from the source material. Also very vocal. And in some cases, those groups overlapped. But you had those two groups that were vocal and trying to tank the film right from the getgo. Still, they were minority groups, not "the Internet" or "the media" as a whole.
But then of course, you had folks at the other end of the spectrum overreacting to the two groups mentioned, who then tried to portray it as "the Internet" or "the media" as a whole, when that was clearly NOT the case, and as a result, overhyping the good in the film and trying to say anyone who didn't like it must be misogynistic white males who don't like anything not featuring a white male. Also dead wrong. Just for different reasons.