Every flapping trap that thinks they know something about football is talking about the temporary effectiveness of our Tebow-led-rushing-attack-based offense. They all dismiss it as "college-style" or "gimicky" or "simply because Tebow can't throw the ball" etc. My question is, why can't this work long term? 

I frankly haven't read a good argument yet why it can't. I'm hoping someone on MHR can clue me in. This has been pretty dang effective ever since our QB switch actually. Below is a comparison between the 18 quarters of Orton ball and the 18 quarters of Tebow ball. 

There's a lot that can be said about this. I'll try to keep it brief. 

Firstly, the pass yds/game is significantly lower and the rush yds/game has more than doubled. We all know this of course. What's interesting though, is the pass scoring has barely dropped. Tebow is way more efficient with his passing. He throws for half the yardage as Orton but scored 7 TD to Orton's 8. Bottom line: We ain't passing much, but it don't matter on the scoreboard. Which last I checked is where the game of football is won or lost!

Secondly, despite such a "utterly terrible, horrible, etc" passing game, our overall scoring is up, our yardage is up, our wins are way up, etc. Our average gain per play is about the same. In other words, our running game completely compensates for the lack of passing. Even though Orton was throwing the ball pretty well at times, our per play average was not statistically better. I find this interesting, since most football observers would expect that running the ball all the time would produce a lower per play average.

Thirdly, we're getting more offensive plays per game and more time of possession. This increases the wear on the opponent, at the same time giving us more opportunity to score. If this isn't a winning combination, I don't know what is, and it's paid big dividends for our defense:

Miller and company have shaved 77 yds/game and 9 pts/game off the opponent since Tebow took over. A good running game is a defense's best friend, and the numbers indicate that. We run more plays than the opponent and gain almost 2 yds more per play on average. 

Every game since Tebow took over, the opposing defense has known (and presumably planned for) that we will try to run and run some more. No one has stopped it. I'm not sure it's possible to stop considering how effective it's been despite all the box stacking that's happened trying to stop it. What am I missing here?

The additional upside to this offense, is that it buys Tebow practice time to work on his passing game. He should have had this time during the offseason, but there wasn't one. Of course there will be games (i.e. Detroit) where we need to throw the ball more. Every game this run heavy strategy works though, is another week of passing practice for Tebow. I expect him to break out and have a big passing game at some point this season. He's looking better every week in that regard too. But I'm loving the smash mouth, kick the teeth in running game till then.