While we were at the Holy Grail Guitar Show a couple of years ago, the luthiers could take a guitar to be checked by a Plek machine.
Ralph Bonte, a luthier from Bruges said his guitar was near perfect. Well within tolerances so it didn't have to be adjusted.
If the fretboard isn't straight, the frets won't be either but it can al be adjusted by the Plek machine.
Thus explaining why your labourer doesn't have to be as skilled as a highly skilled luthier. The Plek machine can fix it.
no factory knows your preference.
I wasn't talking about setup preference but simple things like having a perfect shaped nut so that strings won't bind, perfect fretwork and so on.
I used to do demos for Kramer and the company that imported them also imported Gibson. They had a fulltime luthier in service to fix all the crap that came from Gibson: frets sticking out, nuts falling out, faulty electronics, corroded hardware (noadays they stick it on a relic and charge double),....
Since then, I never wanted to touch one.