Good thing Dr Lobsang Sangay is the political "head" of Tibet, and not the spiritual head.
It's true that most Tibetans follow suit under their country's non-violent movement. Those who self-immolated didn't harm the Chinese people, offices or shops... but Dr Lobsang Sangay can't use the reason that it's because "they are Buddhists".
It almost implies that it's OK to harm themselves, but not anyone else, because they are Buddhists. How can burning oneself be supported? Not only supported, but to be reasoned by a religion where being born with the perfect human body is the best state to be in, as you can practice the Buddha Dharma?
As the Prime Minister of a country (albeit in exile), it's distasteful to not endlessly and untiringly plead your fellow people not to LIGHT THEMSELVES ON FIRE WHILST ALIVE. It's his "sacred duty" as the Prime Minister to be concern about the welfare of his fellow people. If they're self-immolating, how sacred of a duty is it to support their actions? Very sick, and weird.