[femto]

As a counterexample, I offer a pick-and-place line in action.

https://youtu.be/Ca-SoKzjh4M?t=110

SMT component placement isn't that different to placing bricks. Conventional wisdom is that if you can design a PCB that requires no manual work, its assembly cost is more-or-less location independent. SMT pick and place can hit speeds of 200,000 components per hour [1]. That's about 50 components per second.

[1] https://www.hallmarknameplate.com/smt-process/

[imtringued]

Fixturing isn't automated in most places. Sure a gantry style CNC machine can drive screws vertically into your parts to join them, but it requires a human loader to put the two parts onto the fixture in the first place.

[FirmwareBurner]

The tasks requiring high dexterity like final assembly of the product with displays, keyboards, ribbon cables and cases is still done by humans by hand.