Is it true Robert Carlyle is growing disinterested in the show?

I keep hearing that Robert is losing interest in doing the 显示 and not wanting to be a part of it anymore. I mean I noticed also that he stopped appearing at conventions with the rest of the cast and the only 最近的 appearances he's made is for promotion for the new Trainspotting film. He just doesn't seem as dedicated to the 显示 as much as the rest of the cast is nowadays. I think he appeared at a 最近的 panel thing but I'm not sure if that was OUAT related 或者 Trainspotting related.