That's just not true. They absolutely do tell you not to take anything metal with you. So this woman clearly ignored those warnings.

You can't tell me that in the land of lawsuits doctors wouldn't tell you not to take metal objects into an MRI

This statement is categorically false. I have had quite a few MRIs over several decades (knee bullshit), and every single time I have gone in, the staff is crystal clear about the fact that you do not bring in anything metallic, full stop, no exceptions, because it can potentially kill you if it gets pulled forcefully in the wrong direction.

Anyone working at an MRI facility who ignores the rules around magnetic objects is going to definitely destroy equipment and perhaps maim or kill people, and is thus a lawsuit waiting to happen.

Ive only done it once, but I also thought they could have stressed this way more, and probably ought to be graphic about the results, to catch these dumb fucks. However, they also waved a metal detector over me. Shouldn’t that catch things like guns? Is this common practice, or do I just look like an idiot?