Strikes against hardened ICBM silos are low altitude airbursts (optimum between accuracy and required overpressure). Ground penetrating bunker busters are not

Strikes against hardened ICBM silos are low altitude airbursts (optimum between accuracy and required overpressure). Ground penetrating bunker busters are not used against silos. The source you site makes really weird assumptions about US and China using ground bursts. Probably based some kind of misunderstanding. The US, China and Russia have capital command bunkers that survive even ground penetrating nuclear strikes.