At least not yet. I disagree with Charper1, ads are annoying and with all other things equal, I'd choose the service without the ads. Certainly, its one of the things to consider when choosing a service. In fact, years ago I switched from Comcast just to get away from the annoying guide format.
Obviously, content is important. But years ago, when I switched from D to Comcast, content was about the same. Even today, based on what I watch, there's little, if any, difference between Dish, Com and D*. I'm surprised some do not care about ads in their guide. I guess that's why D* started doing it. I think it's bad. If enough people don't care, we'll all have guides that are 50% ads.
IIRC, the ads are linked to channels in the guide. If you know which one it is and delete that channel from the guide, the banner ad will disappear also.
Those people are most of the reason why this world is as bad as it is, too many don't care, too many like being doormats.