Gary, it’s not like Steve is asking for a person’s pedigree before deigning to be in their presence. Everyone uses their judgment to decide what is worth their attention. Seeing real examples of someone’s work in action is a legitimate way to determine if it is worth “listening to the message”.
That being said, he sometimes lacks tact. When I started my thread about building an NLP parser, he somehow thought it was appropriate to link to a thread about entering the CBC, as though that were immediately relevant to my project (?). However I think his broader point is an appropriate one. Lots of people like to talk about how X will do Y, and wading through all the talk is tedious. Show me Y and I’ll be interested in hearing about X.