What's with the XRP shilling?

My boomer dad constantly sends me facebook posts about XRP. It's always something along the lines of "Trump signs executive order for XRP=$100/per token by end of the year." He then asks me if I can invest $10 for him into the coin. Wtf is with these posts? Do people seriously believe this nonsense? Is it just a meme at this point? I am concerned that he's going to get fleeced of his money some day to a bogus crypto scam. He's 67 years old and believes the earth is flat, but that's another discussion.