Its true, that many who support evolution, also have 'opinions' on how the universe began...but that is not included in a discussion of evolution...unless a creationist insists on it...evolution discusses 'living' entities, not the earth, nor the sun, nor the moon, nor the stars, nor anything else in the sky...
You have obviously confused the beginning of the physical universe(the sun, the moon, the stars, etc), with 'living' beings...no matter how much you want to insist that the 'how', of in what manner, the physical universe came to be, to be included in the discussion of the evolution of living beings, they are two separate and distinct areas of study...
It is a part of evolution theory and you disagree. Not too surprising. Do you understand what properties lead to the evolution you understand it to be? It appears you do not recognize the importance of the theory's scientific entire chain..