Who said that, why do you take their word as the literal truth, and most importantly, what does this have to do with a focused discussion of Opus 5.5?

Dario never said they would be. Just that more and more code will be produced by LLMs. All his predictions were in fact pretty much right in terms of months and percentages, give or take small margins.

Maybe not replaced exactly but they won't be manually typing out lines of code anymore. I haven't written a line of code in like 6 months. I review PRs, write prompts and tickets, check CI output, and get frustrated when the magical code machine stops working or I run over token budget