From my perspective, it is Blockstream/Core that are tampering with Bitcoin, by refusing to allow a much-needed capacity increase to reduce fees and allow for continued growth, and then by fundamentally changing the structure of the BTC coin by adding segwit.  
Bitcoin Cash represents the original vision for Bitcoin as peer-to-peer electronic cash.  I will continue work to realize this vision, and help resist the hijack attempt by Blockstream and Core.