OP article doesn't really go far enough, but the general thrust is ok. They should add that you need to take the road any place that isn't wide enough for you and a car – pinch points being a good example. They should also add that the decision is entirely that of the more vulnerable party – ie the cyclist.
There should be a nationwide information campaign over all media on these lines without delay. Motorists must understand where cyclists should be.
Don't be a gutter bunny indeed – the gutter isn't even part of the road – you wouldn't drive in it, so why cycle in it?