When #VB77 was driving for @WilliamsRacing with Massa, Bottas was the #1 driver. Now, things are different. @MercedesAMGF1 has changed the philosophy after Nico retirement. #LH44 is the #1 because he already was a champion in 2008, and there is a possibility to be until the end of his the contract.
It doesn’t mean that Bottas is never going to be champion. He fast, clever and consistent to be a champion candidate.