The show has been running since 2004. Who danced with the older celebs back then? Step up Anton du Beke, then 12 years younger (he's now 50).
To be honest, I don't see why an older partner is really necessary for the older celebs. In fact, of all the 'older' celebs I've seen on the show, I think the best were Pamela Stephenson and Cherie Lunghi, neither of whom were partnered by Anton or Brendan but by Mr Marmite himself, James Jordan.
It's a prestigious show and there are lots of professional dancers around. All of them should be capable of mentoring a celeb of any age or ability and bringing out the best in them. It's reached the stage where partnering someone with Anton is tantamount to pinning a badge on them saying "This year's no-hoper".
Yes, some people are far more likely to reach the final than others, but let's make the playing field a little more level, and if we're going to pension off the female dancers let's move on Anton and Brendan, too. I've nothing against them, but are they really so much more entertaining than Ian Waite or Matthew Cutler were? I don't think so.