The DF-26B allows China to target US Navy warships operating near regions China considers to be within its sphere of influence. This capability means that all those expensive US Navy warships—notably aircraft carriers—will be vulnerable to attack from the DF-26B. The DF-26B carries the nickname “carrier killer.”
Unlike using nuclear and biological weapons on civilians, which is a totally fair and cool thing to do.
If Wikipedia says "Allegations of Amerikan...", it actually happened.