Video chats and meetings have given remote workers a greater sense of connection. Video calls have a lot of positives, but they can also be emotionally draining and distracting.
A faceless phone call provides a sense of anonymity, even when you know the person on the other end. If you want to focus on your conversation without the distraction of worrying about visual reactions, opt for an old-school phone call. Video is rarely a requirement, even if it is the norm in your organization.