If you think salvaging information from social media is a challenge, consider how much gets lost in e-mail or byzantine folder structures on shared drives, or legacy document management systems, usb drives or personal laptops.
The value of information isn't just determined by it's relevancy or "usefulness" in a particular context, but also by it's level of accessibility and discoverability.
Moreover, let's not forget that a huge amount of that information is noise and only a fraction of that will converge in peer reviewed science down the line. And that's how human communication and sharing of information usually works.
Not everything needs to be kept or archived on the spot "just in case". That's just not feasible.
Perhaps when this is all over some sort of open-collaboration framework should be devised for medical professionals (assuming one doesn't exist?). Also, someone could quite easily take the information from Facebook and put it somewhere else that's more accessible. Facebook groups are closed, right?
What's really worrying is that decades after the WWW started as a project for researchers to share their findings, Facebook is the best way to do this.
https://www.nationalreview.com/the-morning-jolt/chinas-devas...