This is just a big bag of bad logic. It's going from their may be other factors beyond our present understanding of physics to their must be a being with volition. It's like seeing the massive complexity of a hurricane and from that deducing that Zeus must exist and demands a goat on a certain Thursday every year to avoid him blowing your crops away.

There is every reason to believe our present theories are presently insufficient because this is a very hard topic and no reason to believe that the universe is caused by something immaterial or timeless much less something with volition and purpose. There are multiple theories that you could read about if you wish that require neither cause nor volition.