To be honest while the refurbished F is very nice, it is not a completely new product, so it hasn't really had as much marketing/advertising, so my guess is that many CX F travellers do not even know there is a new F. At the same time, the overall product is not so different that someone should be disappointed if they get a plane with old F, so people wont really be booking flights based on if the aircraft has new F or not.

Also from CX point of view, there is no configuration difference so planes can be routed anywhere. Anyways refurb seems to be going along well, so more and more customers will be enjoying the new look F.