I can't speak for anyone else, but the last time I donated a few extra drachmas I had to a GoFundMe account, it was for help with cancer treatment for a friend. I'm pretty sure it was legit since I saw her lose all of her hair, she got very thin & weak in the process, and her fiancee, a friend of mine for decades, was run haggard trying to take care of her between radiation and chemo and everything.
That and she died of it a year ago--almost to the day. If it was a ruse to get a BMW, I don't know how much more elaborate you can get.