The timing doesn’t really add up though. ChatGPT was published in November 2022. According to the graphs on the website linked, the traffic, the number of posts and the number of votes all already were in a visible downfall and at their lowest value of more than 2 years. And this isn’t even considering that ChatGPT took a while to get picked up into the average developer’s daily workflow.
Anyhow though, I agree that the rise of ChatGPT most likely amplified StackOverflow’s decline.
I think I can see their point. As they said, fragile isn’t meant as a slur here. If after the tenth time it happens, this kind of thing breaks you, then you’re fragile because the nine times before that made you fragile. Which obviously isn’t your fault but the fault of the people who were assholes to you.