It's not a trend. It's basic football that's been around since forever, just in a different package. And when defenses catch up with it in its current presentation, some young offensive mind will find a different formation to execute the same principles and give it a new name.
About Ware's injury, Griffin played injured too. Ware's shoulder was injured, and Griffin's knee was/is injured. Ware's injury had NOTHING to do with his supposedly poor performance. If anything, Griffin's knee would have been better to use as an excuse as his when he did keep, he ran AROUND Ware (RG3's knee), not THROUGH him (Ware's shoulder). Further than that, I'm selling RG3 short by saying that Ware had a poor performance. In that defense, he was the guy that the QB had to read. And many times, Ware guessed incorrectly. But how could you blame him? The RB ran for 200 yds and 3 TDs for goodness sake! And Griffin's ability to do damage with his legs (even in a limited fashion) are well documented and to be respected. But I digress.
There's nothing new or revolutionary about these offenses. I don't doubt that the Charlie Wards, Eric Crouches, and even Kordell Stewarts of the world could have been successful in such offenses (as they could all pass and run effectively). It just took the NFL's collective mind frame to change and believe that a team could be successful with this style of player and maximizing the player's God-given talents (i.e. what's going on with Cam, Wilson, Griffin, etc) rather than try to turn a player into something he's not. You're failing if you're trying to turn Fran Tarkenton into Dan Marino. If a player is a scrambler naturally, while they're going through their progressions on a passing play, somewhere in their mind while standing in that pocket is the idea that they could use their legs to either get out of a jam or extend the play. But they tussle with getting yelled at by position coaches for doing that. I know that feeling first hand.
In any event, these offensive schemes are going nowhere. The players, however, as they get older will have to learn to rely more on their arms than their legs. That's where longevity comes into play. The only 2 examples I can think of that made this transition completely are Randall Cunningham (going from a magician in Philly to a flat out pocket passer in Minnesota) and Steve Young.