It’s quite fun to speculate. If you’re into this sort of thing, you’d like lemmino on YouTube. Pick any one of his deep dives and you’ll end up listening to something pretty close to what you did here: speculation, in a tight straight jacket.

Part of the problem with dark energy is that so much of it is unfalsifiable in ways similar to these theories. Of course, the key difference is that we can measure the effect dark matter has on the universe, whereas thus far no more than 4 dimensions have ever been observed.

Sure makes drinking fun though. Take a sip and say a hypothesis. Like apples to apples but for physicists.