I think the problem is false positives, not false negatives. The people you interact with during the interview process have all sorts of reasons to embellish the experience of working at their company.
> The people you interact with during the interview process have all sorts of reasons to embellish the experience of working at their company.
That's true, but you have to be kind of smart about it. If you just ask the question "Is working here fulfilling?", of course they'll say "Yes, super!". But you cannot take that at face value, your questions need to shaped in a way so you can infer if working there is fulfilling, by asking other questions that can give you clues into that answer.
Yeah, but that's the thing, when you're interviewing, you usually have some sort of access to talk to future potential colleagues, your boss and so on, and they're more open because you're not just "outside the company" but investigating if you'd like to join them. You'll get different answers compared to someone 100% outside the company.