I also found both the methodologies and the conclusions to be very simplistic. They conclude that repository age isn't a factor and then give apple/swift as an

I also found both the methodologies and the conclusions to be very simplistic. They conclude that repository age isn't a factor and then give apple/swift as an example. I don't use swift, but my understanding is that it's been an ultra popular language for a long time, but only recently got open sourced. I don't think they account for project existence before GitHub appearance which may be a significant factor for a good amount of top projects...