Your "argument" ignores the ridiculousness of China's nine dash line altogether.
If we just let China continue to do what it does, civilization will continue to deteriorate.
Vietnam is right to complain about China building military bases and interfering with maritime traffic in the area, but they shouldn't put their own bases there either. As it stands, they're simultaneously victim and perpetrator kn this conflict. https://upload.wikimedia.org/wikipedia/commons/3/36/Spratly_...