Jeff Doyen’s review published on Letterboxd:
Gee, I wonder why it took them so long to release this? Maybe it was because they had such a dull stinker on their hands and they were delaying the inevitable.
The New Mutants is an underwhelming miss fire of a film and sadly the last in the Fox X-Men franchise. Granted it has some solid foundation to bounce off of, some decent performances from the small cast, and is competently made, it's unfortunately overshadowed by such a dull and uninspired script, underdeveloped characters, and the meshing of two opposite genres (coming-of-age teen films and horror) doesn't work for me.
It seems like these last two X-Men have been such whimpers to go out on for this franchise, but hopefully, it'll get better from here.