The flip side of the coin is practitioners who are too focused on what’s immediately in front of them to the exclusion of creativity.
on edit: typo correction
If your UX guy was anything like 90% of the ones I've dealt with, the answer to those questions would all boil down to "don't know, don't care, I'm focusing exclusively on this cool idea I came up with yesterday".
It appears I've been slightly "triggered", my apologies!
One that comes up off the top of my head is the electronic trial master file in FDA submissions.
Because it has a standard structure, users can navigate it faster through the structured navigation than through a freeform search.
I think other contexts this might hold true are when the content is browse oriented (how often do you use search on HN or reddit?) or it's a mobile context where a structured nav would allow less tapping than typing a search query.
Of course, that all probably happened because somebody involved didn't want your product to have search. Process can not solve political problems.
"Genius is one percent inspiration and ninety-nine percent perspiration."