I suppose God is as good an explanation for the start of the universe in the absence of any other compelling theory, Manners. However, it occurs to me that is precisely what God and gods have always been – an easy way to explain away difficult subjects. The province of God, in that respect, has been getting smaller and smaller as time has gone by. He, She or They is/are needed less and less.
That said, though, there is absolutely no evidence that God or Gods was/were involved at all and, so, it must be regarded as an article of faith, rather than an explanation designed to fit the facts.