It takes a lot more skill and capability to be a creator than a consumer. I would like someone to make a movie about two time travelers who chase each other through time like a car chase. However I have zero filmmaking skill and I don't really know how to even start such a thing. My skills are best applied elsewhere, that doesn't mean I can't cross my fingers and hope that a talented filmmaker makes that movie.

Maybe because he is to busy. Or maybe because of a 100 different other reasons. Whatever his excuse, the fact that someone could be to busy to implement some software doesn't mean they can't critique something they don't like, or suggest ideas for things they do.