There are Merc Engines in 10 of the cars. I am not for one minute suggesting theres any instruction etc, as I am sure there isnt. But if your going to buy an engine from someone in 2022, wouldnt you like that team to be the World Champions?
(This also disregards the important fact that the Drivers world championship is different from the Constructors Championship, and its the Constructors Championship that gets the big buck prizes…)
Russell is the only one really outside of the Factory Merc team that you’d say has a real obvious stake in this and hes already said this week he wants LH to win.
(Because maybe he thinks if LH wins then he hands in his notice on Monday and Russell ends up Merc #1 sat next to Ocon or a test driver….:D )