You seem to be under the impression that UK transport policy is dictated by the CTC when in fact just about every traffic engineer and planner over the past 80 years is fully signed up to the segregationist orthodoxy you advocate. Haven't you noticed the blue signs? Just in case you don't get out much take a look a selection:
http://www.warringtoncyclecampaign.co.uk/facility-of-the-month
That is the reality of segregation. Clearly you think that those of us who are sceptical of the merits of this kind of thing are mistaken - that is a matter of opinion. However, it is simply absurd to attempt to claim that the CTC killed it off when the evidence is out there for us all to see.
Of course back n the 30s, the planners didn't even try to pretend that the paths were for our benefit - they openly admitted that the purpose was to prevent us impeding the progress of motor vehicles. The motor lobby at that time was campaigning (fortuanely unsuccesfuly) for the use of paths to be made compulsory. However, the enthusiasm for the planners never dimmed and they have been doing it your way ever since. Look at any new settlement or road scheme - and see segregated infrastructure tagged on to increasingly cycle hostile road layouts.
This is most apparent in the new towns. Starting with Stevenage these were built around completely segregated cycleway networks (building on green fields without the constraints of space).
Which is exactly what every traffic engineer spouts whenever we take issue with their latest scheme - and what they have been continuously spouting ever since Eric Claxton was designing Stevenage. OK, 60 years ago and without any evidence to go on it was a plausable hypothesis, but the folk of Stevenage did not take to 2 wheels - nor did they in Harlow or Livingston or Milton Keynes or Telford or Runcorn or
Skelmersdale. Instead these became the most car dependent towns in the UK.
And of course one of the problems with cycle paths alongside roads is that they are much less safe than riding on the carriageway.