No, I don't think it's suspect, because it seems like you're looking at a narrow-focus of productivity increase.
"advocates are talking about multiples of increased productivity", some are, some are not, and I don't think most people are, but sure, there's a lot of media hype.
It seems like the argument is akin to many generalized internet arguments "these [vague people] say [generality] about [other thing]".
There are places that I do think that it can make significant, multiples of difference, but it's in short spurts. Taking over code bases, learning a new language, non-tech co-founders can get started without a tech co-founder. I think it's the Jr Engineers that have a greater chance of being replaced, not the sr engineer.
"advocates are talking about multiples of increased productivity", some are, some are not, and I don't think most people are, but sure, there's a lot of media hype.
It seems like the argument is akin to many generalized internet arguments "these [vague people] say [generality] about [other thing]".
There are places that I do think that it can make significant, multiples of difference, but it's in short spurts. Taking over code bases, learning a new language, non-tech co-founders can get started without a tech co-founder. I think it's the Jr Engineers that have a greater chance of being replaced, not the sr engineer.