"Marketing" does of course involve providing information - but so do most human activities, and in most of these that word "marketing" doesn't belong.

If I give my address to someone I'm not "marketing" myself". If I pass out posters about a demonstration I would find it offensive to have that described as "marketing". Providing accurate information about programmes is a matter of public service - in fact with some programmes providing accurate information might be likely to put people off programmes they would not like, rather than to attract viewers.
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I'm still puzzling over this term "edge". It seems to me it's one of those metaphors which have got out of hand.

If we talk about something which is very difficult or demanding as being at "the edge", and understand that as implying something admirable, that makes sense. The image is of pushing forward into new territory which deserves to be explored. So being "at the edge" is a good thing, and the expectation is that in time perhaps "the edge" will move forward

But not all edges are like that. If food is going off there will be a stage at which it is still edible, but only just. If the light is going there will be a stage at which it will still be possible to see, but only barely so. And there is pain that can be borne, but only just. Those are edges you do not want to approach more closely than you are obliged to, and there is no expectation that "the edge" should move forward over time.

And when it comes to humour it seems to me that this is much more a case of the second kind of edge than the first. Being "at the edge" means it is barely tolerable, while being over the edge is intolerable - as in this case. To describe something as being "on the edge" is not to praise it but to criticise it.