The real service is their hosting:

"If running it yourself is too daunting, we can host it for you on your own dedicated virtual server for as little as $5 per month."

It's more friction on the user's end too. My older relatives stay logged into Facebook. They have no idea what their passwords are, often not even what username / email address they used to sign up. I'm not sure that an approach that requires me to make an account and then send a username / password is going to work for people who needed a 20 minute telephone conversation for help unmuting themselves on a Zoom call.