The general concept of battling hypnotics is certainly interesting, but what Hypnotic ultimately fails in is the execution of its concept.
Specifically, the movie uses hypnotic powers as a way to build plot twists, but these plot twists feel more like a half-hearted "oh, actually that didn't happen" than satisfying. It was equivalent to when you play a game with a child who keeps making up new rules as you go:
Adult: "I cut your arm off with my lightsaber."
Child: "No you didn't! I actually healed it!"
In Hypnotic, it's much of the same, answering dramatic moments with a quick retcon that's flimsily attached to a quick "it was hypnosis" explanation. And like playing that game with the child, those "plot twists" only serve to make the Hypnotic viewing experience frustrating rather than fun.