Without picking the conversation apart bit by bit, I'd have to side with you, Tykeman.
I'd like to say to Mr X that where CAMRA is concerned, the clue is in the name... Campaign for REAL ALE... not the Campaign for Well Crafted and Tasty Keg Beer. There's nothing wrong with craft keg if that's what you like to drink... and yeah, i think it's a good idea to put it in non-cask pubs, so it has more opportunity to be 'discovered' by the keg drinkers, and potentially gain popularity. That's unlikely to happen in a real ale pub as most of the drinkers there will be there to drink cask beer and are likely to give the keg stuff a wide berth just out of principle (as well as price!).
A pub we drink in fairly often has 3 casks and 5 craft kegs... sometimes i get excited when i see a particular beer advertised on their Facebook page, and then am disappointed when i realise it's the keg version. And at the keg end of the bar, their board shows the prices for half-pints instead of pints, which is always a shocker.
