Indeed. Turns out the doorman is doing a number of additional tasks, not just opening the door, and thus cannot be identically replaced with an automatic door opener. And here we are, right back at the start of the conversation.
You're confusing the word "doorman" to include other random unrelated jobs, like expecting the postman to also deliver your milk and then complaining that email doesn't solve that problem.
(I guess if you ordered milk online, he could, but that's not the meaning regular people assume when saying "postman")
No. Coporate fired a bunch and now doorman is doing their work, too.