Is there any way to have a duration do something in the cleanup step but not next turn without using ways?
If not, then the question of whether this ruling is a general tweak to the duration rules or a special case for way of the squirrel is not very relevant until some future card makes that situation possible.
Right, that's what I meant by saying that the question might be too non-practical to expect Donald to answer it. In Outpost v1, Outpost could make you draw 3 cards in cleanup without making you take an extra, turn, though even then it was ruled that simply trying and failing to make you take another turn counted as a thing that Outpost still needed to do, and that thing happened after the current turn was over.