I see your point

Some of the best exchanges that I participated in or witnessed involved people acknowledging their personal limits, including limits of conclusions formed a priori

To further the discussion, hearing the phrase you mentioned would help the listener to independently assess a level of confidence or belief of the exchange

But then again, honesty isn't on-brand for startups

It's something that established companies say about themselves to differentiate from competitors or even past behavior of their own

I mean, if someone prompted an llm weighted for honesty, who would pay for the following conversation?

Prompt: can the plan as explained work?

Response: I don't know about that. What I do know is on average, you're FUCKED.