If Edinburgh Fixed cares to ride straight across at the junction from Dalmeny into the Queensbury Estate and follow the road as it curves to the South (rather than head up to the big house) he should appear at the gatehouse where the Kirkliston road connects with the A90. As yet no-one has had the backbone to press for the official public access via that estate road, although the neighbouring Hopetoun House estate has delivered a decent shoreline connection from Blackness (eventually) which makes for an excellent route from Borrowstones Ness to South Queensferry
Personally I too found the A90 an acceptable route - especially at rush hour when you could fly past queueing traffic from the Dalmeny junction Southwards.
Given that the A90 is a general purpose road, for which Edinburgh Fixed pays council and other taxes should he be demanding a refund, as he is being denied the use of something he is paying for
Working on the percentages given by our local council I reckon I'm paying over £600/year of my Council Tax for local roads maintenance, and frankly they are not delivering - many of the motorists who whinge about cyclists not paying are probably paying less than me.
WRT the Sustrans debate, there are I suspect many target driven compromises which should not have gone through have been allowed to slip in just to complete a route, and there is some merit in delivering a route which retains a pressure on those able to deliver to sort out the problems like these.
There remains a clear need to get an understanding of the distinction between Sustrans and CTC - as I understand it CTC is a membership organisation akin to the AA delivering member services and campaigning on issues for members and other cyclists. Sustrans is a good causes organisation offering deliverable projects in sustainable transport, but no member services, and often refers campaign and supporters' queries on public transport, and possibly other issues to CTC, as the more appropriate organisation. Several Sustrans Rangers are also active CTC members and recognise the difference.