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I too thought sock shoe sock shoe was absurd, but I just now realized there is one circumstance when I would do this, which is when getting dressed after swimming at a public pool. Generally not much dry floor to stand on, so makes sense to get the shoe over the sock asap. Perhaps folks who wear shoes inside their house all day would feel the same way about their own floors!

Topologically, there is one hole in a straw.

Topologically, your mouth and anus are the same hole. Yet everybody count them as two holes.

Maybe the sock-shoe could instead be like "what's the right way to eat a steak": cut off a piece and eat it or cut everything first before eating.