I don't know why people are demonizing this. By ending in-person visits, one jail is able to redirect manpower towards its GED program. That's somehow evil? No doubt video calls are inferior compared with face-to-face meetings, but the trade off seem entirely reasonable. Inmates will have more opportunities to talk to their family and they'll get more educational help. It's a decidedly positive development.
You understood why video-only appearances in court by the accused are problematic. Extend that reasoning to why video-only contact with people who love and support them is not an adequate replacement for face-to-face meetings.