If they're interviewing for a remote position, then their ability to use the equipment that allows them to communicate is part of the interview. There might be

If they're interviewing for a remote position, then their ability to use the equipment that allows them to communicate is part of the interview. There might be intermittent problems (internet outage, power outage, etc.) but if they are just entirely unable to manage videoconferencing during an interview then it doesn't bode well for them using it day-to-day.