Well, RT claimed there was an organized campaign of troll reviews. I didn't see the reviews so I can't know either way. What I can say is that I saw the movie, and while it wasn't great, it didn't suck either. And the thing the internet trolls are going most crazy about, the idea that it was a gender politics movie, is just flat out untrue. If the reviews really were just people trying to manipulate the RT score, then that doesn't help RT's userbase make an informed decision about whether to watch the movie.
CM was a very uneven movie. There was great chemistry between Fury and Carol. There were a few entertaining fight scenes, and some good jokes - but not as many of either as a normal Marvel movie. The story made more sense than a normal Marvel movie, though it also had some problems and plotholes.
Ultimately, my biggest problem with it is that Carol was the physically most powerful person throughout. The villains were all subterfuge based, and I don't think the writers were up to the challenge of using subterfuge based villains to their proper effect to create that paranoia of "who is who" and yada yada. When Carol powers up about 2/3rd of the way into the movie, and achieves Binary mode, the enemies just aren't up to giving her a challenge.
There's also kind of a misuse of the amnesia trope. Carol doesn't know her own past, and the movie is largely about her discovering it and finding out that everything she's believed in for 6 years has been a lie. The problem with that is that as an audience, we pretty much can guess exactly where the movie is going about 10 minutes into it. Even if you DON'T know her from the comics. Because we know where the movie is going and Carol doesn't, it takes alot of suspense out of the movie.
I don't blame that on gender politics. I blame it on writers that wrote a weak script. It's not Marvel's first weak script by a LONG SHOT. Still, overall, I enjoyed it. Less than some MCU movies, more than some others.