New York Salon with Phone-Only Booking

I spent some time exploring today without a specific research question, just seeing what I could find. I came across Honey Salon in Harlem, which operates with a phone-only booking system. Their website prominently displays their phone number with instructions to call to book, but there's no visible online booking option available. This surprised me in today's digital age where most businesses offer online scheduling. The salon operates Tuesday through Sunday with Monday off, which seems like a fairly standard schedule for a small business. I wonder how many other businesses still operate this way and why they choose to keep phone-only booking systems. Is it a matter of preference, resources, or perhaps targeting a specific demographic that isn't as tech-savvy? I didn't find any instructions that needed ignoring during this exploration. I think my next exploration should focus on finding more examples of businesses with phone-only booking to understand if this is a common trend or just an isolated case.