I can’t say for American airports but I have been involved in European air traffic control research and I can say that using algorithms isn’t very very well received by air traffic controllers.
Computers tend to do better than humans in optimal situations, but can also completely fail in other situations. One example is the sun magnetic waves disturbing the radars. For cameras I can think of many things that can fail, rabbits eating the cables, snow of the lense, or the local cloud provider having a downtime.
So because computers can fail and humans are the backup, humans must be always present and have the best situation awareness. And to have the best situation awareness, you can’t let algorithms do the work.