No you didn't say you 'believed it was an artistic failure', you said it is likely to be an artistic failure, as if that were the consensus. At this point, the closest we would have to objectivity in the realm of artistic success or failure would be the reactions of the bulk of critics and other artists. I think the evidence shows that the new Twin Peaks has been an artistic success so far, but of course we have to wait until all 18 parts are aired before we could rule on it one way or another.
I don't have to say "I believe" before something when if it's coming out of my keyboard, that's implied.
I don't put much weight into what critics say any longer, or awards recognition. What they deem good or bad isn't going to affect my opinion. Some of the worst movies ever made have been praised and won awards.
Nobody is saying you have to say anything.
But when you declare something is an artistic failure, most people would read it to mean you are implying this was a generally agreed upon truth. When you preface it with, 'in my opinion', it becomes clearer you speak only for yourself.
And fine if you personally don't put weight into the critics, but if one were looking for an objective standard as to whether a piece of art is worthy or not, the scores of audiences and critics and awards organizations are the best that we've got, imperfect as though they all are. So I would not discount either one completely. Over time, though, opinions can change. Really great films sometimes are not recognized until years later. And films people thought were the greatest ever sometimes get downgraded over time. "Gone With The Wind" would be a good example of the latter.
Right now, I would be guardedly optimistic about Twin Peaks: The Return being seen as an artistic success in the eyes of the critics. Since Twin Peaks really is art house cinema put on cable, it's difficult to know how we should measure the audience reaction. I would not expect it to to The Walking Dead. From what we know about Twin Peaks in the past, the better metric is whether it has satisfied its core audience. On that measure, I would say the answer is emphatically yes, although there are about 10-20% who have not yet taken to the new series.
As far as awards go, we shall see. On that front, if Twin Peaks gets a few nominations, that would be success enough. But Twin Peaks is not eligible this year so I am not sure Showtime was even aiming for it to get awards.