Is this a self reported survey? Why would companies admit they’re not using AI?

The results are aggregated and not sent to investors. There is no incentive to lie, and this survey is voluntary, so if you respond at all, it's out of some civic duty.

What were you expecting the negative consequences of admitting the dire crime of not using AI to the _census bureau_ to be? Straight to Census Jail?

Worse, a lower stock price.

Whoever fills out the survey isn't a CEO