Obviously it matters in terms of which roles you play, but otherwise I don't think age should be an issue. As long as you are fit enough to keep up the rigour, then I think it is great for such wonderful actors to continue. Older actors have so much acting experience, and bring so much to the characters they play. But a young can be equally as good. It is talent that matters, not age.
Yes I would agree with her comments, except to say that nothing can beat experience and that comes with the years put in.
A fantastic actor who it is always a privilege to watch.
Long may she bless us with her performances.
I think it depends on the role as obviously Judi couldn't play a teenager or young woman. Age, however, shouldn't matter with more mature roles. I think when Judi Dench and her cohorts Maggie Smith and Helen Mirren retire it will be a sad day as the standard of actors coming through nowadays is very low generally.