My own comments about this article show that there is some validity to this statement, but I have to stress the some.
I have never considered race or gender while walking, but I have no doubt that if I did, I would probably observe the same things she did.
This is because collective consciousness is deeply obsessed with race and gender. To act as if it’s not is to basically lie; and yes lots of people, certainly white people, do tell this lie to themselves and others. Still doesn’t change the reality of the collective consciousness.
And so, your last sentence is unfairly patronizing. Because it is difficult to break away from collective consciousness. It requires ignoring vast amounts of information/external stimuli. And yes it can be done, but requires extraordinary mental power. How about you wear some black skin, and give it a try?