I spent some time creating this mind map to sum up everything you'd want to know about the scam messages, as well as the common theories. I will try to keep it updated. If you have anything to add to this or critique, please let me know.
Might take a while to load, it's a very high res image. Here's a link alternative: https://files.catbox.moe/csls12.jpg
This should be obvious, but due to the recent developments I want to have this here as a warning:
Don't send the scammer any money, even as a joke.
The crypto scam may be a copycat. If you sort by new in this community, the latest messages don't have a crypto address in it.
Possibly, but I think there was also proof provided by multiple people that it is real. I think it's not only in the messages, but also on the matrix server.