I prefer the term 'dress code traditionalists' rather than fanatics and no, I don't think Cunard are clear. They fudge that.
david63 has got it nailed in his last two posts.
I'm a relative newbie to Cunard and don't have the connections to the Cunard past many have so maybe that's why I can see both sides of the coin but I look to where the future of Cunard lies, the stability and ongoing existence of the line and in 2024 onwards, it's no good looking back. Like it or not, the future is still of a well dressed passenger cohort but with tweaks which bring on a more relaxed style and if the ships sail full, or very nearly, then that's is what is demanded from 'today's' passengers.