system
A chat on subreddit /r/PoliticalCompassMemes
human
They bought a tractor/combine, but many of the features of the tractor/combine are supported or enabled by software. Most newer-generation tractors and combines self drive using GPS to ensure full coverage in a field, and can rate control planters or sprayers to ensure proper spread. The controls for a modern implement look more like a tablet or a laptop than a steering wheel. 

Their argument is that making unauthorized repairs could effect the software performance and cause the implement to behave in an unsafe manner. I think they're full of shit and were just trying to make their dealers (and therefore themselves) more money, but it's at least a semi-reasonable argument.
gpt
Ah. So this is more of a case of don't buy tractors with licensed software.