Not exactly. It was a set of macros, yes, but the goal was an improved editor, not a standardized interface. Later there were multiple ports which shared many things in common, such as key bindings, on–line help, etc.
No, it was a standardized interface. Guy Steele talked about going around the office collecting keybindings from multiple people and distilling them down into a standard set.
I'm not sure where you're going with this. A bunch of people wrote macros for TECO. Moon and Steele collected them and standardized them. The set of standardized macros is Emacs.
Thus, Emacs originally was a set of macros to standardize key bindings across multiple editors that existed at the time, exactly as GP said.
