GT Grade -- a great gravel grinder , but can it do single track?

I really, really like the look of the GT Grade.  But one comment from a reviewer stopped me short:

As good as it is, the Grade is not perfect. I’d like to see more tire clearance for even bigger tires (or mud clearance). But even though the bottom bracket is low and you’d have to watch what you pedaled over... 

The same reviewer raves about the fun, the versatility, and more.   He notes that GT's designers worked to make the Grade deflect a lot.  So you get, presumably, a smooth ride: so suggest many reviews, like this one.  But that BB height!  It's only 28mm. Compare that to the Cannondale Quick CX with 33.2mm height.  Sad to say it, but that's a deal breaker, because it limits how much single track one can do.  

Sadly, too many designers are keeping that bb low, which means that "adventure" bikes are limited to rough dirt paths, and not much more.