It is broadly true that Scott believes that AGI will come in the near future and from LLMs, although his reputation runs a ways deeper than that.
I mean, that's called "having an opinion".
Yes, that's called "having an opinion". Typically people writing argumentative pieces are doing so because they have a belief about the matter. I'm not sure what exactly you expect here.
> if he's wrong I would hope he owns up to it
I think Scott Alexander is pretty good about that.