I suspect this is just the first step in what is potentially a very long running and expensive case. It gives a possibly controlled/corrupt judge legal justification to dismiss or give an early ruling in Sidney's favor, and thereby protecting Dominion from discovery and exposure. Laying out the evidence is a higher risk strategy because it hinges on what is admissible and non admissible, which is kind of like what's moot and not moot if you get my drift.