It is, but if Gaffigan squanders the marketing potential of this, then it will have a serious impact on how much money his special brings in.

Since this is only the second time a (well known, mainstream) comedian has tried this, a failure or even just a poorer-than-expected showing could make a lot of other entertainers write Louis CK off as being a one-time thing. They'll assume he succeeded as a novelty and will be more wary of trying it in the future.

We need Gaffigan to succeed to show that the model is repeatable in order to convince others to try it. If he fails, it will be that much harder to convince others that they're not better off just following the status quo.