Boffin1:
That does not mean that you can't get away with not using that approach occasionally. Using that approach, however for a reliable solution is dangerous.
Right, and the whole point of Arduino is to simplfy things for beginners, no direct port manipulation for example, so lets stick to the basics on the hardware side when newbies are asking if a resistor is required for an LED.
Now I know what the ugly stepchild feels like. Lets hide him in the closet when company comes to visit. sigh.
So, the next time someone specifically asks:
"LEDs without the use of current limiting resistors"
And gives a very specific example, we are supposed to tell them that its impossible to do that, and they should never think such dangerous thoughts?