The internet slang variant is in dictionaries now so the usage is correct! And modern, seeing as it was added post-internet era. The amusement comes purely from

The internet slang variant is in dictionaries now so the usage is correct! And modern, seeing as it was added post-internet era. The amusement comes purely from seeing it in the BBC, an institution known for their formal English who at one point standardized the accents of their presenters.