Hide name of the user and computer name from terminal window title Before Catalina it was possible to hide username and computer name from terminal window title: 



Yet now despite any combination of configuration I'm unable to hide those items from window title:
The reason for that is because you are running zsh shell. I'm running the bash shell and no name or directory shows up in terminal window name. You can run bash before running terminal and that should give you the window name you want.  If you type zsh the terminal name will change back. 

I don't have Catalina but I've read its changed initial terminal setting to zsh.