It's because the education system is utterly outdated across the world. No digital literacy, media literacy, or health literacy in the curriculum but lots of things you'll never need and forget to never be useful again within a few months. Studies should investigate things relating to this subject.
It's also because of the quality of search engine results but both are directly linked, people need to learn how to use search engines etc.
No, they just added lots of data for one of the multiple things that current emulation efforts (just like neural networks / brain-inspired AI software) so far didn't even include (neuropeptides).
There's no reason for why it would now be possible to simulate complex nervous system processes, but maybe this could enable getting closer to that. I don't know what you mean with "outside behavior" though. Maybe you're referring to the behavior in some simulation like this?