Rashid N.’s review published on Letterboxd:
Showcasing that same typical "quirky" family you've seen in multiple comedies, The Mitchells vs. The Machines presents a magically colourful world that holds your attention for the entire 110 minutes we spend inside the minds of writer and director Michael Rianda (in his feature-length debut, no less) and co-writer Jeff Rowe in his first who is known for his writing on Gravity Falls. Group them together with very talented animators and a grand cast of actors, you receive an undoubtedly emotionally effective journey which works even better if you have a love for movies (we're on Letterboxd so yeah) since there are a lot of easter eggs related to astounding films and filmmakers.
Look, my opening tells there's a lot to enjoy and yes, this is an extremely enjoyable movie yet to be completely truthful, it baffles me that the film has as high of an average rating as it does because of how predictable and average the writing is (no offense to Rowe and Rianda). The predictability doesn't stop the film from being fun but it really did bother me. Not to mention many of the annoying jokes feeling old and plain unfunny, though there were many good ones too.
I think it's that simple: a very entertaining and breathtaking film that unfortunately has very generic writing.