When the richest person in the world does a TED talk explaining how he plans to reduce the world population by 1B+ using vaccines, funded through his giant tax

When the richest person in the world does a TED talk explaining how he plans to reduce the world population by 1B+ using vaccines, funded through his giant tax shelter, is it really surprising that there would be some push back? It's a noble goal and with a bit of luck it will be wildly successful. But people are hard to trick when their lives are on the line.