> Maybe the purpose of life is to accelerate and magnify that explosion to achieve the highest possible cosmic reduction of entropy.

What mechanism would define that purpose? Earth harboring life for a few billion years, and then snuffing itself out, seems completely irrelevant on the scale of cosmic entropy.

Your argument might have merit if intelligent life tends to perform crazy Physics experiments that spawn new universes. Then you'd have an evolutionary feedback loop where universes become tuned for intelligent life.