Looks like the plan is to support more than Python: https://kite.com/letmeknow
So we took the approach of focusing on one demographic (Python developers) and making them really happy. We think we've reached that point, so we're excited to begin looking at how we can expand our reach. Stay tuned!
While I agree with your sentiment that the changes were intrusive, from the article they weren't actually ads in the strict sense. No Ugg Boots or Rolex Replicas. They were helpful links to knowledge articles or documentation, from what I gather.
Could be wrong though.
That's gotta be a tough position to be in, having raised ~ a lot of money and having the pressure to do a suboptimal move to please the investors.