Ethereum WASM is on the horizon, providing a more stable, flexible and faster programming environment. However introducing the technology might bring a couple of unexpected results. The problem is that with the help of WASM there will be many other languages available for Ethereum programming, apart from Solidity. The real difficulty in Blockchain programming is however not the programming language knowledge, but actually the mindset. As Ethereum smart contracts store a huge amount of money on a public blockchain and actually the deployed code is pretty much immutable, developing such a code requires special considerations. Instead of Agile or DevOps methodologies, defensive programming, formal versification and correct by construction tools should be used. For those who has actually never taken part in mission critical system development, these methodologies are new. The result will be that many software developers with WASM compatible languages will start smart contract development, which will cause again a huge amount of buggy software and a lot of hacks on the public chain. That will result that the general perception of the chain security will be again pretty low.