I totally agree that putting proprietary integrations into open source packages is shady. However, I don't think that the Minimap "kite promotion" [0] went so far as too actually upload code to Kite's cloud platform. It looks like it just added tool tips that referenced Kite's documentation. That's distracting and unwanted, but not as egregious as uploading your code without permission.

[0] https://github.com/atom-minimap/minimap/commit/16c11d82b889c...