Has there ever been speculation about the increased energy output from the Sun in part causing the Cambrian explosion? (The Sun you to be a good bit dimmer.) I

Has there ever been speculation about the increased energy output from the Sun in part causing the Cambrian explosion? (The Sun you to be a good bit dimmer.) In other words, could we have reached a critical point in the evolution of the Sun’s energy output to allow for the Cambrian explosion to unfold? At that point, life would have had more energy available to evolve into more complex lifeforms?