NO. The main reason people are on ventilators is they CAN'T take deep breaths, becuase of disease, not the ventilator.
And prone position for ventilation is possible, and often recommended.
https://litfl.com/prone-position-and...l-ventilation/
Stop giving medical advice or finish med school first. This is not the sort of thing that should be politicized. Exploitation of anti-authority sentiment in this area is demagoguery at it's worst, because it directly causes physical suffering and death.