I don't have the statistics to back anything up, but I've always been led to believe that Rugby League's viewing figures on Sky were excellent, so if that's the case then it's not like he's turning people off the game in their thousands. I sympathise with those who find him irritating and can appreciate why, but for me he does more good than harm and I'll continue to appreciate his work.
You can hardly use the viewing figures to back up Stevo's popularity ratings really can you though as rugby league fans have no option but to watch Sky if they want to watch any rugby league on TV. I watch Sky for that reason but I don't listen to Stevo and Eddie. I listen to 5 live extra for commentary instead. Sky could come back and say that hundreds of thousands watch Eddie and Stevo so that's all fine and dandy except that wouldn't actually be providing an accurate reflection of whether those same people want to watch Eddie and Stevo. We just have no choice.
I'm no RL afficianado. But I appreciate intelligent, articulate commentary which explains stuff to me. I learned more about the rules and nuances of the game from listening to Premier Sports both their commentary teams and the video referee than I have ever learned from listening to Eddie and Stevo, but that is because I want to have an understanding of what it is I am watching. Premier Sports' coverage included wit and banter too but not to the exclusion of education and analysis.