Not really DBAs
So it still needs a database to connect to in order to run queries? In that case DBAs will still be just as vital to keep it humming along nicely, and of course handle the query load this tool will generate.
What it really seems to be is a halfway house between writing SQL and using Business Objects, which of course needs a developer to set up the universe first. I think it would have a fairly niche audience in large companies in that case, but might come into its own for smaller companies that can't afford a fully fledged BI team.