Landscapes are shaped by water and cloudscapes are shaped by air.

Cloudscapes shape landscapes because they generate the water that shapes the land.

Landscapes shape cloudscapes because the guide the air that shapes the cloud.

It all seems pretty complex to me … although I can see why it might suit a religiously minded person living in less enlightened times to postulate simplicity as a explanation selection criterion.

Maybe the real reason we observe the phenomenon is that

Amoungst the multitude of challenges you encounter you should seek to publish on those which have the simplest explanation.