I’m pretty sure reading an MRI to look at brain activity takes a little bit more effort.

It doesn't...

You point at the prefrontal cortex and the amygdala.

If one is big and the other small, that's enough to categorize.

I know most people aren't aware of it, but its not some super rare phenomena that only a single article has been written about it, and that article contains everything.

That's fundamental though, that applies to almost every time someone says something they know, then finds a relevant article off the first page of a search engine.

I didn't go thru my comment line by line and source every comment with an article that backs up everything I said.

Use some critical thinking