It occurred to me that I should update this.
The gent finally returned my text, with apologies for having gone radio silent. We continued to exchange text messages to configure the details of a meetup, especially since my other obligations continued to shift the timing of things, up until my arrival at the meetup. The meetup was one of my best in four years of hiring. The next day, we exchanged some pleasant "morning after" texts. We have yet to speak on the phone.
I prefer to text and will initiate a phone conversation only upon the gent's request. In my experience (and as a former phone sex operator/performer, I know the phone well), being ghosted has little to do with the technology...