Haven't seen the movie, but the concept seems dated.
Like the Cameron Diaz movie Bad Teacher from 2011. It would have been subversive had it been released in the 1990s, but in 2011 it's just filling in something that the 1990s missed and expecting but failing to get the same reaction.
Same with the 2017 Ghost in the Shell. It was a mindfuck when the 1995 anime came out, but the concepts are old hat today.
Or like the Carl Sagan TV series Cosmos which was deep and profound in 1980. But Neil deGrasse Tyson's version in 2014 failed to impress. The public has seen a lot since then, and it takes a lot more to impress people today.
Again, I haven't seen Alita: Battle Angel, but going by the trailers and promotional material, there was a time when it would have been cutting-edge cool, but today they seem a little over-confident in their assumptions about the viewer.