Tbf don’t think they are totally wrong about this one. China can and absolutely should do better especially with energy production but western companies who outsource their manufacturing there to cut costs and skirt regulations absolutely share the blame, and those are our responsibility to regulate.
Definitely, after we find solutions for the most lethal cancers we will probably only see life expectancy go up by 5-10 years and have most people die from the 2nd and 3rd highest killers, cardiovascular and brain diseases. There are some promising possibilities for treating heart and vascular disease with things like cell therapies and tissue engineering but the brain is going to be a tough nut to crack.