No to the first question. You won't get any fermentable sugars from the corn in this recipe.
The purpose of using flaked corn in a recipe is to add fermentable sugars while lightening up the beer's body and color. You do get a little corn flavor from it, but not much. Steeping it like in this recipe might add a slight corn flavor, and yes, it might add a haze from dissolved, but unconverted, starches. Not sure why you'd want to do that in a cream ale.
That said, in the interest of me taking my own advice, I shouldn't criticize this recipe without having my own empirical observations about steeping flaked corn at ~150 degrees in the absence of an enzymatic base malt. I've never done this, nor am I going to, but it might turn out just fine.