I'm sure there's someone on the planet. Which is a very different state of affairs from the one that would obtain if a well-known AI researcher had, say, made

I'm sure there's someone on the planet. Which is a very different state of affairs from the one that would obtain if a well-known AI researcher had, say, made a $1500 public bet on AlphaGo winning, while also loudly declaring that worrying about AGI was like worrying about overpopulation on Mars, in the company of other researchers declaring similar combined expectations. What actually happened was the reverse of that; AI moved faster than I publicly bet a large sum of money on it moving, and I was already worried before then. I'm not aware of the reverse-reverse having happened. If you're claiming something as a successful advance prediction to bolster belief in a general model, it's fair play to ask for a record of that advance prediction.