Four straight Super Bowls isn't just insanely good, it's unprecedented. It's literally never been done before or since. No other team can say that they've been to four consecutive Super Bowls. Not the Steelers, not the Cowboys, not the Patriots.
The Broncos get some of this flak too because they lost five Super Bowls, all in embarrassing fashion. But to lose five Super Bowls, you have to go to five Super Bowls. How many teams can say that?* And hey, the Broncos have also managed to win three Super Bowls along the way. That's not nothing.
(It's also worth noting that the Patriots have also lost five Super Bowls, but nobody talks about that much. Funny how that works, yeah?)
So to all the haters and the analysts and the armchair quarterbacks who are promulgating The Myth Of The First Loser, pick a direction and walk till your hat floats. Better yet, let's have an in-depth conversation about the last time you finished first--in anything.
* The answer to that question is 10: Patriots, Cowboys, Steelers, Broncos, 49ers, WFT, Packers, Dolphins, Giants, and Raiders. About a third of the league, in other words.