No offense but I am not going to argue with you over the same points again and again. Well agree to disagree. I loved the show and the ending and again my single favorite aspect to this show is that they left a lot to the viewer. It makes it a million times better in my book. As for the hype, yes that is exactly what I am saying. The more hype a show has the less of a chance it has to live up to that hype. It has been proven time and time again throughout TV history and if your honestly trying to compare the finale of Arrested Development, ST TNG and Buffy to that of Lost, Seinfeld, Sopranos, Cheers, Friends, etc....well that's pretty funny. Those were all great shows but they didn't have nearly the level of hype that shows like Lost had. Its simply a whole different level of hype which is why they are all destined to fail. Shows that have the amount of hype that shows like ST TNG, Buffy, Arrested Development etc. had are completely capable of living up to the hype and many in fact do.
Lost had even more hype as it had so many unresolved issues and unanswered questions that people were DYING to figure out. it was impossible to live up to that hype and any show that reaches that same level of hype will also fail. The Lost finale made the cover of Time magazine. Funny but I dont remember any of those other shows you mentioned making the cover of time. Why not? because they didn't have nearly the same level of hype. Not even close. I am not even sure why you even mentioned Arrested development. While it was definitely a critically acclaimed show, and definitely one of my favorites, it never had great numbers and only averaged about 4 million viewers in season 3. A show with those numbers is completely incapable of the hype I am talking about.
Although hype doesn't equal quality, one must admit. American Idol gets a ton of hype, and I doubt anyone is going to say it's the greatest show ever. Why do numbers have any influence on the quality of a show's finale either? Buffy the Vampire Slayer, while certainly never a huge ratings grabber, had one of the strongest series finales ever. And certainly that show has lived on in critical circles and pop culture (even academia) for the last seven years.