We don't think there's any need for Bitcoin to "strike back". If you take a moment and think about where Buffett is coming from, it might actually help you learn something (no matter how bullish or bearish you are on Bitcoin).
Buffett is a really smart guy, and he doesn't say stuff that has no logical backing. Yes, sometimes he's wrong, but then again who is never wrong?
Here's something that illustrates what you can learn from Buffett's comments on Bitcoin written in an objective way: https://steemit.com/bitcoin/@ledger256/is-bitcoin-really-just-rat-poison-nope-but-there-s-still-something-to-be-learned-from-buffett