Not at all; it's very good. Here is an example of what Collins explains
Astrophysicist Luke Barnes suggests to look for explanations like God by saying The proposition (call it C for chance) “it is not true that the laws of nature were chosen with intelligent life in mind” is not a necessary truth. It is a hypothesis which could be false, and thus should be tested. It needs to be compared to alternative hypotheses. Simply calling alternative hypotheses “life chauvinism” assumes that they are false. It takes as certain the very thing that we are debating. the fine-tuning of the universe for life shows that the probability that a universe for which C is true is very unlikely to be life-permitting. Thus, given that this universe is life-permitting, we do what we always do when a hypotheses implies that an observed fact is extremely unlikely. We don’t just say “and yet, there it is.” We go looking for alternative hypotheses.
So why would God want to create life (such that the the probability theism isn't low?). The reason is that God is imagined to be morally perfect, and conscious life is thought to be
pro tanto good -- this conform to a long-standing thought that God would want to create a life-permitting universe. Furthermore, it is at least
prima facie reasonable to think that God would want to create the universe in such a way that we would value life as something that is rare and fragile. Many forms of theism don't predict this, however traditional theism happens to support this notion - so, as per the comment from Barnes above, we look to these hypotheses as they have at least some plausibility. Since we evaluate evidence based on which event is more likely under a certain hypothesis, this being a life-sustaining universe is evidence for the theistic hypothesis.
----------------------------------------------------------------
Ultimately, this isn't proof but what it shows, if successful,
(1) that the fine-tuning of the universe supports the theory that God exists as against the theory that God does not exist
(2) whatever probability you assigned to the existence of God before encountering these facts about the fine-tuning of the universe, you should raise your probability assignment significantly.
hence, for logical form, then we're given:
http://www.commonsenseatheism.com/wp-content/uploads/2009/09/Collins-The-Teleological-Argument.pdf (here's a very good explanation)