Cycling in Sydney Australia
I would like to think that this design is the beginning of a future non-bi-di arrangement.
Sounds like there is a need for a prospective study of Bi-Di users to see how many continue to cycle long term and whether they ever graduate to regular roads. We would need to define how long the process might take: 6 months, 12 months, 2 years?
The Bi-Di's will end up ghetto-ising cyclists
As the encounter you describe in your first paragraph amply demonstrates, we already are second class citizens. Can't get any worse by taking the issue to the streets, so to speak.