It's possible you're good at spotting good people, and rejecting bad people, but it's also possible that hiring is just easier than you think it is, and most people are capable of doing the jobs you hire for. You have no way to tell if you'd have the same result just hiring people by picking random resumes. Maybe negatives are just rare.
This is the impossible problem with hiring. Every interviewer wants to minimize false positives (they're expensive!), but every interviewee thinks they're a false negative.
I don't think this could be true? If you think you don't belong/deserve the job (imposter)... why would you think you deserved the job (false negative).
The fear of BSers seems to be what holds people back from this approach though, and I can see that it wouldn't work for certain non technical fields.
That's just survivorship bias waiting to explode. Also, they're successful by some arbitrary metric that is applicable only to your company.
I've been on the hiring team for every employer I've had for the last 15 years and have hired dozens of people.
I've found this technique to be extremely successful. It's possible I may have had some false negatives, but I've never had a false positive. Everyone I've recommended for hiring has been successful.