Theism has no particular predictions, and therefore zero explanatory power. You have to combine it with ad hoc hypotheses to get to a sort of God that would create our particular world, and thus the prior probability of the God you are invoking to explain the world has become as improbable as the world you are invoking your God to explain.
I think the situation is even worse for Christian theism. You now have to combine the Christian conceptions of God with loads of ad-hoc hypotheses for why the Christian God would create things with evolution despite the complete lack of scriptural (or sensible rational) support.
Of course there’s perfectly good psychological and sociological explanations for why anyone would even do this, because they have some sort of psychological/emotional connection to their religion and are allowing themselves almost limitless leeway to reinterpret and redefine their religious beliefs to square them with scientific findings no sane person could ever have predicted or claimed that they would expect that any God would have created the world like.
“God would totally have done it that way” predicted no-one ever.