If you had viewed the other photos and read their captions you would have seen this:

"After the solder paste has been added, electronic components are placed on the board using surface mount technology machines.

These machines can mount close to 25,000 components every hour, placing individual components in a blur of motion.

Each Pi has 173 surface mounted components, and it typically takes 150 seconds to finish mounting the six boards in a panel.

The factory uses three such machines to produce the Pi, one for mounting the underside of boards and two for the top."

That sure looks like automation to me... But what do I know... I used to run the systems that operate Netflix's automated dvd handling machines... 3000-4000 units / day isn't the same as the 7MM DVD's per day we were handling when I was there but all that automation was supported by about 1500 people!