https://paralogical.dev/glish/
Input: South Korea has said it will resume propaganda broadcasts against North Korea for the first time in six years in response to Pyongyang's campaign of sending rubbish-filled balloons across the border.
Glish output: South kawrshk has said it will zoordz pran byerkstz genst North kawrshk for the first time in six years in spahns to yangz kayktn of sning brish-filled noorz skruh the derr.
Not very practical but a lot of fun.
More than a century ago, “words of one syllable” was a trend in publishing:
Robinson Crusoe in words of one syllable
https://archive.org/details/robinsoncrusoeindefo/page/8/mode...
Aesop's fables in words of one syllable
https://archive.org/details/aesopsfablesinwo00aeso/page/6/mo...
History of Japan in words of one syllable
https://archive.org/details/historyofjapanin00smit/page/n9/m...