If they really want to reform English spelling, they should write a spell-checking library in every major programming language that builds on every major platform and can be easily integrated into chat, message, and mobile keyboard applications which defaults to “English 20xx”, but still supports default English.

All it would need to do is not highlight “improved spellings” as incorrect in “English 20xx” mode at the start. Then it could slowly turn the knob as they see increasing usage.

If you want to do even more then you can implement speech-to-text and transcript generators that default to “English 20xx”.