We know also why Eric became Magneto. And even though his life goals are evil, you have a certain empathy for the evil characters. Then why don't we have any for Samuel L Jackson's character? He comes across as just someone bad. And yes, if you've seen Terminator, the arm turning into weapon effect is so much like Robert Patrick's T1000 in Judgement Day, you are not alarmed. Even the Hollow Monsters seem to be familiar.
The film fails to engage simply because it wants to say too many things about Jake, his grandfather, his relationship with his dad, the peculiars, Miss Peregrine, war, loneliness, the science fiction part about time in a loop, Jake's sudden attraction for the floating girl, Judy Dench in a sudden appearance and callous disappearance, period costumes, the creepy boy who reminds you of Sid from Toy Story. And nothing satisfies.