I wouldn't place much blame on the Witnesses for the deaths. I live in Florida for the last 38 years, and experienced many hurricanes. I also been in the Philippines: Cebu, Manila, and Bohol. There is a huge difference between the two countries. The infrastructure in the Philippines are horrible, mainly from government corruption, but I won't get into that. When a major typhoon hits there really isn't too many evacuation options for the Filipinos. This observation was validated by my wife and her family, who are Filipino.
They can go inland, but if you look at the death tolls many were from mudslides off the mountains, and several died in shelters (school buildings and other government buildings). Remember the Philippines is a collection of islands, and death by Typhoon is a fact of life there. With that being said, I've seen the GB/WT exploit disasters, and this is another example. I just don't place too much blame on them for any of the deaths.
An example of those dying that sought shelter inland.
"The governor of the worst-hit province,
Compostela Valley, in Mindanao said waves of water and mud came crashing
down mountains and swept through schools, town halls and clinics where
huddled residents had sought shelter." - New Bataan, Philippines Erik De Castro December 5th, 2012