As has been said, these assessments, especially, are very long. Not everybody has a room in their home they can go to. Not everybody knows how to use Zoom and video conferencing. These are all administrative issues that add stress and aren't necessary.
Phone calls with clients could be easier, but when they're so long, it is punitive to people living outside major urban centres, who maybe don't have the same Internet speeds or the same connections. They're all being forced to relentlessly check these email systems and log in. Heaven forbid you forget your email password and you have to go through IT.
Especially for veterans who are in their senior years and are losing their jobs in their sixties because of service-related injuries, it's very difficult to manage this system.