I'm not sure how your post is responsive to my post. I watched the whole lecture.
Are you saying that this lecture was released to hint to the rest of the world that these ideas have become mainstream PLA doctrine... and so we will likely see more personnel cuts as PLA adopts a more flexible nuclear doctrine?
No, the audience of the released video are for the domestic mass, and it proves to be very successful PR event - in the past week it's among the hottest topic in Chinese military loop although no public medias mentioned it- that's why you posted the topic here. And he is not talking about PLA's effciency and how to save the money, to think that way is too narrow mind.
What he talks has nothing new actually, everybody with basic military sense understands it. And it confirms PLA war doctine has changed in past years, as outsiders already see the signs of changing. Something still in debate in the PLA will not go to public like this, agreement has been reached. To make a big change in military doctrine like this, you need some conditions not just wishful thinking:
1) You have the technology ready, we see DF-31, DF-31A, DF-41, 094... mentioned all the time these years
2) You have the money - the financial means ready, I don't think it's a problem for China
3) You have the new doctrine ready, or the will to use it - that's what he is talking. The not-first-use policy is dead for PLA now, and they tell the Chinese public its death. The only thing left is to tell the world, well they need a good timing to do that as I said, or just wait until the last minute.
And he did mention the further cut of troops size, if you really watch that carefully.