>>149074990The comics played fast and loose with Magneto's powers before this, so it's not unprecedented. Granted they had the excuse of the writers not being able to just use Google or Wikipedia to understand how science works and didn't expect the readers to call them on their bullshit like when Magento's magnetic powers allowed him to hypnotize people, or when he made a hole in a wall or dome or something that Iceman made out of ice.
Also, ice is technically magnetic, just not ferromagnetic. I can't remember all the details, just that there are situations where magnets can affect ice.
And Ultimate Magneto also did a bunch of stuff.
Also, in the movie, he makes a quip about the guy having too much iron in his blood, even though the iron (or iron compounds) in blood aren't magnetic the same way regular iron is. But also, Mystique spiked the guy with actual iron, and Magneto was just saying stuff because he's a character in a sequel to a movie where https://www.youtube.com/watch?v=P0yKSNq-oLg&pp=0gcJCdgAo7VqN5tD happened.