From his interview it seems he just doesnt like just lazing around, he'd rather be on set.. Any set.. Doing whatever they want of him to keep busy.
And him directing would be interesting but as he said he's more hands on than a typical episode director and wouldn't work well for him.
Maybe he could be persuaded?
His last response is basically talking about the difference between directing in TV and directing in movies.
In movies, directors are essentially the auteurs of the entire endeavor. They might not write the script, but they do request rewrites. The producer is basically reduced to a money man in the background. But they compose all the shots, do the casting, decide where individual scenes will be filmed, usually have a great deal of control over the final cut, and even do a lot of the movie budgeting themselves. They control essentially all the primary creative and techical aspects of a movie, from pre-production to post-production. Which is why when we discuss movies we tend to follow directors, not screenwriters.
In contrast, in TV writers typically have primary creative control. In recent years the lead of the writer's room (or two-person team) have been branded "showrunners" but this is an informal term. Still, TV series are never director driven. TV directors are typically hired guns brought in for a 1-2 episode block. They cannot reasonably do an entire series because of how filming schedules work - they will need to be editing/involved in post while additional episodes are being shot. Because directors typically only shoot 1-2 episodes in a given season, they are limited in terms of what they can do in order to not have jarring creative differences between their style and that of the other directors in a given season.
Movie directors do indeed sometimes engage in television, but when they do, they typically take on the hats of screenwriter and executive producer as well, making the role very similar to that of a movie director. Think of Twin Peaks, Boardwalk Empire, or Sense8.