In what way has Cruz exposed the GOPe? Hell, he's depended on the GOPe and back-room shenanigans to keep him in the race, which, frankly, he should not be in since he has no mathmatical way forward.
I think what we have learned clearly through this process is that Cruz is not anything like he was presenting himself. As far as I'm concerned, he is condescending, preaches at others, cannot talk like normal human beings, cannot be depended on to tell the truth, and he is establishment to the core; just more sneaky than most.
Think of Cruz and the budget fights over the last couple of years. Those were epic - and eye opening. He tried to get the pubbie leadership to have a spine, but he opened my eyes to the fact that they had preemptively surrendered to the dems.
So yes, I am grateful for his exposure of the establishment.