I mean, it's goofy and intended to be that way, like the last two movies. And it's generally more ceherent in terms of overall plot than the last two movies, aside from not really explaining why it was a good idea to give Alexa killing powers.
This review may contain spoilers. An alright rom com film. But the real amusing story here is the underlying plot about obsessive fandoms. Dude does not even recognize the rockstar he has a literal shrine to. And he basically has all the facts wrong ...