Nothing specific at the moment. Give him time though, he will say something controversial soon.
Sometimes, you just have to take the bad with the good:
...."In fact, Busch is now the only active series driver to have more than one championship to his credit, except for the seven-time titlist Jimmie Johnson. According to NASCAR, Busch has more wins this decade than any other driver in the series. The win also gave him 56 career Cup Series victories, giving him sole possession of ninth on the career list, one ahead of Rusty Wallace."
.....and there it is.... Johnson announces his final year.....
..."Jimmie Johnson, one of the most decorated champions in stock-car racing, announced the endpoint of his full-time driving career Wednesday, indicating 2020 will mark his final season in the NASCAR Cup Series."
This year has been a big change with added demands on his time. Added where team meetings during the week, debriefs with other team crew chiefs during race weekend etc. Hats off to him for realizing he had followed his dream now it is time to help his family enjoy and follow theirs.