The overall point was that bikes can be made to work, Asia is a large scale example, although as you say, not necessarily by choice. The Netherlands, and increasingly other parts of north west Europe are another example.
In India you can see entire families, Dad, Mum and Baby on Mums back riding a moped.
I'm not a biologist but I believe non white, non middle class people are capable of riding bikes... Even women! :P
The overall point was that bikes can be made to work, Asia is a large scale example, although as you say, not necessarily by choice. The Netherlands, and increasingly other parts of north west Europe are another example.