The other shoe has dropped.
“...Max Verstappen will start the São Paulo Grand Prix at Interlagos from the pit lane after Red Bull made changes to his RB21 under parc ferme conditions.
“The FIA has confirmed that the Milton Keynes-based squad has also fitted an entirely new power unit into the back of his car, taking advantage of his poor grid-setting session....”
https://racingnews365.com/max-verstappen-hit-with-brazilian-gp-grid-penalty
A new engine too, eh? No balls, no blue chips.