If this was, say, a Firefly origin movie or better yet a stand alone Sci-Fi film without Star Wars in the title with the exact same plot, characters, and action, would it be getting ripped to shreds?
Well, it's being ripped to shreds in places you have a proclivity to engage with. The general consensus seems much more moderate and that it's a fun film, like I said 7/10 with top critics. Beware observational bias on social media.