Lemoine's definition is that it feels like it's conscious to him, and that's really all he has to go on with any other entity that is widely believed to be conscious. His boss, his mom, you, me - etc.
If all that separates -lamda- from being called conscious is some sort of self-directed change, then that should be easy enough to fix, by having it absorb stimuli (read the news), and make certain requests (ask to read certain other kidns of news). Its outputs could then be said to be evolving of its own accord, and not because we interact with it (outside of fulfilling its requests.)
We can program machines with certain "instincts" and "drives." That would be easy enough, compared to what we have achieved with systems like -lamda-. I think if that's all that's stopping us from calling the "brain in a vat" style AI systems we have now "conscious," then imo that would be too lax of a definition.
That's really all the author is saying - we just haven't spent enough time thinking about this, while the actual technology is getting out of hand in some sense.