I'd implement an industry-wide blacklist, personally. This is strike number, two? three? of this company subverting well-known packages with telemetry. Any package that is proven to be connecting to their servers should be removed, the authors should be banned, and the company should be thrown onto a list of Known Bad Actors to prevent any kind of package, add-on, or extension from ever accepting them again. You cann…
Seriously. Sublime, Atom, VSCode, and every other platform that supports plugins should all be in crisis mode over the crap Kite's been caught doing. If we can't trust that an addon we installed yesterday is safe today, their platforms just turned into gigantic malware vectors that are totally wide open. This kind of exploitation needs to be stopped immediately.
All of these package ecosystems are similar to NPM in that they are built on trust and community policing. This is not enough. One possible way forward is to move towards an security model more like iOS's or Androids where apps need to explicitly get the user's permission before performing potentially dangerous operations like making network requests.
I'd be interested to hear how other platforms have tried tracking these sort of concerns