Thank god that there's no China-nese DDs complaining that Debconf18 is held at a place occupied by Taiwaneses.
IMO there _are_ valid concerns on whether a government's occupation is justified (e.g. some of us Taiwanese believe the Republic of China government has no legal standing in "occupying" Taiwan), however, this doesn't justify your stance of objecting an event to held in such places as it really doesn't mean that the event support the occupation(unless we really hang a banner that says so).
I have my sympathy to those who may be affected due to the political reasons, but that really not Debconf's fault nor responsibility as a third party.