Consider that the GP said,

>Mentioning AI brings out a sharply negative side of HN that I had not seen before 2023

And the parent said,

>I would say that HN was at least as sharply negative during the cryptocurrency craze

And your response was,

>The false equivalency in this explanation is off the scale.

The parent in fact said a very straightforward, non-controversial thing, and you responded in anger, as if they said something like "AI is the same as crypto".