As I said, there’s many reasons. Non uniformity is a massive problem for some human bricklayers, a robot would most probably explode
Programming it to different gauges, perp widths etc to hit openings, head heights etc would most probably be more expensive, equipment wise and time wise, even on times having to build things out of plumb to make it ‘look right’ etc, than just having a human do it.
If every building was set out to exact brick or block gauge both width and height wise, doors & windows, vents, foundations spot on from concrete to damp course level etc there may be a chance, but, trust me, they never, ever are and never will be.