I would think if damage was within tolerances (even at the maximum of such), they'd be willing to relaunch. Implications from the tweet and subsequent conversations are that the damage exceeded thresholds to guarantee safe future flight, which is why they'd use it for testing on the ground.

I'd still read his tweet as meaning it's "too busted" to fly, but I suppose it's up to each person's own interpretation. Your point is well received.