People absolutely use it usefully, that it can be used as marketing fluff is a far more recent thing. If it's never been used usefully and isn't now, there's no point arguing about it because that war has been lost and if it has been used usefully redefining it makes no sense.

Arguing about definitions is easily one of the least relevant parts of any discussion so I'll leave it here. I just wish AI topics didn't always have someone say it wasn't "real AI".