This Too Shall Pass. Bitcoin will have become better for it. The more bitcoin is attacked, the stronger it becomes.
Discussion
If it becomes unsustainable to maintain Lightning channels, does the larger block conversation happen? No, but for real this time, not because people wanted BCH to happen.
Personally I think block size is perfect. Solid as f*ck. Never changing. Layered solutions will accelerate and all will balance. We are so early and this is a great reminder of what is to come