And now that rumor has been put to an end by this:
"Racing Point is to become the Aston Martin Formula 1 team from the start of 2021 as part of a new investment deal between the British car manufacturer and Lawrence Stroll."https://www.motorsport.com/f1/news/racing-point-aston-martin-stroll/4678704/
Which mentions nothing about Toto Wolff or the Mercedes F1 team, and that makes way more sense since Stroll already owns some/most/all of Racing Point already. Not sure how someone thought he's buy out Mercedes F1 also. I guess Lance will never have to worry about having a job.