AutoCAD is not like Altium in that the former requires either hitting Enter when the minimum command is entered, or more annoyingly, selecting from a slow-to-render autocomplete context menu with the mouse.

Some common commands can also be annoying when the required minimum characters don't cleanly map to a single hand, e.g. [E][X][P][L][Enter] to explode; or when they map to the other hand, e.g. [P][L][Enter] for polyline.

Altium's approach is literally single hotkey sequencing (i.e. no [Enter] after every command) which map directly to menus that underline each hotkey as a reminder, e.g. to [P]lace a [W]ire or [P]art in schematic capture, it's [P][W] or [P][P], respectively, while the menus change with ever key press. Yeah, your left hand is all over the keyboard, but every key press is a meaningful context switch.