Well done Carl Sagan, he just removed a special pleading fallacy, and satisfied Occam’s razor in one rational assertion.
Not quite so keen on this, as it matches an unevidenced assumption with a different one. However it does highlight a begging the question fallacy the KCA uses, and of course a rational contradiction it usually contains, namely that nothing can be infinite, then immediately claim a deity is infinite.
However these two simple arguments pretty much destroy the Kalam for me, as they show it is held together with known logical fallacies, and is therefore irrational by definition.
Though there are other flaws and fallacies in it of course.