Dwayne was poor, he made himself into a soon to be BILLIONAIRE. He took a lesson from Arnold Schwarzenegger and became his own self marketer. He obviously has been on the gas for many decades and now his red engine light has come on.
I'm sure this along with the death of Hulk Hogan albeit later in life has rattled Dwayne to the core regarding his own mortality.
He's not the best actor, yet some of his movies are watchable to a point.
I hope he recovers enough to enjoy his Billion dollar empire he built.