At 60, Alan Cumming Is Hard at Work Doing His Own Stunts for "Avengers: Doomsday": "The stunt boys I'm working with, who could easily be my children, are all gobsmacked I can even walk."
At 60, Alan Cumming Is Hard at Work Doing His Own Stunts for "Avengers: Doomsday": "The stunt boys I'm working with, who could easily be my children, are all gobsmacked I can even walk."

collider.com
“The Stunt Boys Are All Gobsmacked”: At 60, Alan Cumming Is Hard at Work Doing His Own Stunts for ‘Avengers: Doomsday’

This is stupid. "Doing your own stunts" is an outdated concept and risks setting back production, not to mention lost wages for the crew and regular people who work on set and have to wait, unpaid, until grandpa recovers from the injury he got doing something he shouldn't have in the first place.
https://screencrush.com/danny-trejo-tom-cruise-stunts/
Danny Trejo had a good quote about this:
Yeah, weird ego thing. I'm surprised the insurance companies allow it
That's also a relative thing. His "stunts" are likely jumping around in a wire harness doing martial arts. He's not doing Tom Cruise shit, like free-climbing skyscrapers or hanging out of airplanes. Nobody expects Boris Grishenko to be Jackie Chan.
Acrobatic fighting and swordplay choreography is hard to do well, which is why actors will often use stunt doubles. It's not just "this is dangerous, bring in the person that nobody loves." It's more like "This guy playing the teleporting swordmonkey qualifies for Medicare, so let's get someone who can rise from an Adirondack chair without grunting to do the blue demon crawly-bamfy-fencing bits." If he's able to do it, it's going to look better in the movie.