While you are technically correct in that DigDug used the wrong analogy, they are correct in that slicers are really good now and you won't spend hours dialing in temps, flow rates, and speeds like you once did. You do simple CAD stuff (e.g. scaling and orientation), add supports if necessary (and the auto option usually does a good job), then press slice to get a gcode file which you send to the printer (either network, serial, or through a SD card).