“The worst they’re going to be” line is a bit odd. I hear it a lot, but surely it’s true of all tech? So why are we hearing it more now? Perhaps that is a sign of hype?
Secondly, I think there's a tendency in AI for some ppl to look at failures of models and attribute it to some fundamental limitation of the approach, rather than something that future models will solve. So I think the line also gets used as short-hand for "Don't assume this limitation is inherent to the approach". I think in other areas of tech there's less of a tendency to try to write off entire areas because of present-day limitations, hence the line coming up more often
So you're right that the line is kind of universally applicable in tech, I guess I just think the kinds of bad arguments that warrant it as a rejoinder are more common around AI?