If you haven't watched The Sopranos this week but intend to, go away now and come back after you've seen it. Well, The Sopranos is over unless there is a movie in the works. I kinda doubt that. If there really were two other endings shot, I think I would have preferred one of them ... EITHER ONE. First off, they got some very unlikely help from Phil's crew and the FBI. I found that a little pleasing and displeasing at the same time. I liked that they got him but I don't think it would have been that easy. Throughout the show, Tony and Paulie showed up at the usual places where Phil's people would have been looking for them. Nothing happened but the tension was mounting. Finally, creator/producer/director/writer David Chase tantalized us with tension in a diner building up to a big ending in the final scenes and then pulled the rug out from under us. I feel cheated. There are some who are saying this was an appropriate way to end, that this is Tony Soprano's life and always has been. He has so many enemies that every opening door is a threat. Maybe so but we deserved a conclusion. We deserved answers, not questions. I'm disappointed.
I was disappointed too. After reading several interpretations of the ending, I feel a little better. One commentor on a website said that it wasn't Tony that got "whacked", it was the audience. It's over. I thought that was interesting. I was a little disappointed in this whole last season. I didn't think it was as good as previous seasons. Here is a link to one article about it. I read EW each week for a recap and interpretation of each episode.
Yeah, I've read a few interpretations now, too, including your link. I'm not compelled by any of them, including my own, which is of the life-goes-on-nothing-happened interpretation variety.