Most of the magic doesn't come from the robots, it comes from the soldermask. Surface tension from molten solder will move misaligned parts by a surprising amount:
I used to program PNP and CNC machines back in the heyday of Cray, then moved up to developing the software to program PNPs and CNCs (shit, I've come a long way since then but still miss the sweet smell of lead in the morning from the wave solderers) improving "fiduciary" operations and increasing speed, accuracy, and feeding.