I said "in an hour" to mean, the time it takes to identify the issue.
That fairly obviously doesn't turn into "bugs per hour" to verify, but if you find 10 candidates in an hour and then get reproducers of them out over the next few days, they are real bugs.
Like sure, "not properly reviewing" could be a thing but if I'm looking at a hard crash on my console, that's not behavior as designed.
But you and hundreds of others find these bugs and send them to review. Lots of duplicates plus lots of hallucinations.