These are not hair follicles though, they're like very small tooth picks that stick out of the head to guide the hair out of. I don't think it would as difficult as placing follicles but Tsuji did just answer that 50k units would take 25 hours.I think the process itself is expensive . The technetion that put hairs only for like 5k graft can work for 7-6 hours. So 20k graft or30k graft would take few days. And i didnt talk about the cloning process . I dont see how those things would get easier that much in the future
I'm assuming the lead doctor would be creating the hairline/temples/crown and multiple techs of a robot could just go off on doing the rest. I actually think a AI trained robot could do a great job of recreating natural hair patterns by just being tuned correctly.