[jjulius]

YMMV, but nearly every one I read has a glaringly incorrect comment. I frequently research off-trail mountaineering routes and the incorrect bullshit it confidently spouts at the top of a list of results (results which very much counter the AI overview) is liable to end up getting someone hurt, lost, or worse.

[steveBK123]

I also see this failure mode where it inverts the question and answer the affirmative to the inverted question (therefore the opposite of correct answer).

If you read too quickly or are on a mobile device, the clarifying information may be below the line break.

https://imgur.com/a/tKSQuA3

on a mobile device (iPhone Pro Max) with Large Text enabled you can see how the clarifying text starts to roll over to the next line:

https://imgur.com/a/wvNspMT

Imagine a senior on an older smaller phone with large text enabled, easily missing the Opposite Day answer.

[Zigurd]

I suppose I could think of worse use cases like: give me a recipe for a sketchy peptide shake, but not by much.