Not sure if that was a typo but OP mentioned OnlyOffice, not OpenOffice. I don’t think OnlyOffice has ever tried to get me to make an account or do things on the cloud. I keep both Only and Libre installed. I like the UI of Only better, but Libre is more functional, at least as far as spreadsheets go which is my main use.
Crazy! Kenney makes excellent assets. Thanks for the heads up!