A life is a life and is precious, whichever way you look at it.
From a Buddhist point of view, you do not take a life. If you do, even if it's your own life, you will end u in hell realm. So, how can Lobsang Sangay say anything good about self immolation? You are encouraging them to go to hell!
From a circular point of view, taking a life is murder. Suicide is also considered illegal. SO, how can that be right? You are encouraging murder, something criminal!
So, from this itself, I don't think, to put it mildly, Lobsang Sangay should encourage this self-immolation.