No, a nail technician is a job that sustains many immigrant communities. They may be faceless to you but they're real people getting pushed out of jobs. This "automation device" isn't anything like a smartphone.
The nail technicians meanwhile will find work in industries created as a consequence of consumers having more disposable income with which to spend on new goods/services, from having to spend less on nail work:
https://www.economicshelp.org/blog/6717/economics/the-luddit...
It is always those goods/services that are the least automatable that cost the most. If getting one's nails done becomes automated, we may see consumer spending shift to the next most valuable service that can't be automated, like home cleaning, caretaking of the elderly, massage therapy, childcare, tutoring, or barrista work. Automation allows us to enjoy a higher standard of living.