[Ergodicity]

The other piece that is misleading in the article is that it says "1 scoop out = approx. 3 low outs", and implies that this somehow has to do with the fact that this is a split pot game (since it says it literally 1 sentence below where it says "two outs for half the pot are not equal to one out for the whole pot")

The reality is that outs for half the pot are exactly equal to half of the value of scoop outs. It's just that given the nature of the game, its fairly common for someone to have your identical hand (ie. you both have A2).

But the fact that someone else has your identical hand is not specific to a split pot game -- you will very often have someone else have your same straight (and less commonly your same fullhouse) in pot-limit omaha (high only), and it happens in holdem also.

You could just as easily change the example to say, "If you run a ten handed simulation 100000 times, giving Hero A2TT, making the board 45JQK rainbow, then Hero is scooping unless someone has his same straight, so his scoop here is not really scooping all the time and thus "1 scoop out = approx. .8 scoop outs."

So adjusting the approximate value for outs for low is something you need to do because of your opponents likely holdings and your hand reading -- NOT because of anything inherent in a split pot game. In fact in Stud8, you will tie much less frequently for low and thus don't discount your outs.