I think the best answer to this is the official statement from Mercedes boss Toto Wolf.He said it was a colossal f*ck up tonight.He also said it was a fairy tale who didn’t work for Russell tonight but it will work out eventually and a new star is born.
Yes, that's a truth answer Form him. Also Mercedes become for the pit stop fault a penalty about 20.000€, also the team and not the driver.
https://www.motorsport-total.com/formel-1/news/kommissare-gnaedig-20000-euro-strafe-fuer-mercedes-nach-boxenpanne-20120620
But for Bottas looks not good after the next years...