I haven't seen NDA on interview from many startups in the Boston area. (Which is good, because I minimize the number of NDAs that I sign, and just try to be professional and collegial.)
The first NDA for an interview that I recall was from a big tech company, and most of it could be paraphrased as something like "Everything we tell you is under strict NDA; anything you tell us, we will treat as public domain" (or maybe it was more like nonexclusive license to use; I forget for certain which that particular company said, since I've also seen the latter since).
Later, I think that company reworked it to be more like "Don't tell us anything that could be proprietary to someone else!"
I don't think the company was trying to be malicious; the double-standard is because they don't want you in a position where you violate an NDA, AND they want to make it clear to their staff (the person interviewing you) not to press you for details.
Agree that their later wording is better, but I suspect good intentions from the start
The first NDA for an interview that I recall was from a big tech company, and most of it could be paraphrased as something like "Everything we tell you is under strict NDA; anything you tell us, we will treat as public domain" (or maybe it was more like nonexclusive license to use; I forget for certain which that particular company said, since I've also seen the latter since).
Later, I think that company reworked it to be more like "Don't tell us anything that could be proprietary to someone else!"