Pre-emptive Strike
Irrespective of what it was, whether it be a natural calamity or the mysteriousness of DNA altercation, everything was data that could be fed into a computer and computed for results.
Various simulations could be conducted. Billions of variations that happened within a cell division which would affect the overall function of a physical body, even that could be computed.
This was the functional superiority of a technological society, Earth's Silicon Era.
The information related to Systems, his goals, etc. were made public on Carburettor Island. There was a wave of problems following that, but a word from him and everything was treated to be normal.
This was the effect of the Young Master System Fragment. It was also how Jionerd trained his people to become terrifying experts by making them face life and death tens of hundreds of times.