It is not some powerless hackers/individuals who claimed machines are hackable. These claims are made by powerful political parties with resources, government i

It is not some powerless hackers/individuals who claimed machines are hackable. These claims are made by powerful political parties with resources, government in various states and large cadre etc. So your points are not applicable in this case. Hacking machines should be much easily provable than random generic political charges like 'govt/politicians are corrupt' or officialdom is lazy etc.