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.
It's kinda interesting that they seem to be targeting specific users, glad your filters are working.
I really want to know how people are being targeted. I've only received one, have zero idea if it was a specific post or community? I think mine was after a post rather than a comment, but I can't recall.