I'm not sure if/why they would be hand-assembled, as SMD pick & place machines exist for the lighting industry: https://youtu.be/Y45COU2LdXg https://youtu.be/Y4

I'm not sure if/why they would be hand-assembled, as SMD pick & place machines exist for the lighting industry: https://youtu.be/Y45COU2LdXg https://youtu.be/Y45COU2LdXg (Granted, these are not individually addressable, but that depends on the PCB.)