Update. Turns out that John #Deere has been using open code under the #GPL w/o living up to the license. The Software Freedom Conservancy (@conservancy) is calling on it to comply — which would greatly enhance #farmers' #RightToRepair.
https://sfconservancy.org/blog/2023/mar/16/john-deere-gpl-violations/
"We…publicly call on John Deere to immediately resolve all of its outstanding GPL violations…by providing complete source code…that the GPL & other copyleft licenses require, to the farmers & others who are entitled to it."