take something with a pinch of salt
idiom UK (US take something with a grain of salt)
Add to word list
to not completely believe something that you are told, because you think it is unlikely to be true:
https://dictionary.cambridge.org/dictionary/english/take-with-a-pinch-of-salt
This is just another installment of the rubbish that people here are fed. It really is just so puerile. TV and other forms of media is the same. Feed you know what to the mushrooms and keep them in the dark. Keep doing it and people believe it. Tell a lie often enough and people will believe anything. Very old and effective way of social control.