I think having some personal retirement savings is still useful in a broad range of possible AGI outcome scenarios, so I personally still do some retirement saving.
Regarding 401k/IRA, anything that preserves your ability to make speculative investments based on an information advantage (as outlined in this post) seems especially good; anything that limits you to a narrow selection of index funds seems potentially suboptimal to me.
Does anyone know if the 2022 survey responses were collected before or after ChatGPT came out?