The argument there is a little dishonest, given that if you only had the option of riding public transit that your schedule would indeed be well conformed to using public transit. I think everyone understands VERY well that they could get from point A to point B faster by using a dedicated vehicle which is solely concerned with getting them from point A to point B, that's not really debatable.

In the states at least if you're using public transit it's generally as an intentional time / cost tradeoff. That's not a mystery and taking a point-to-point schedule and comparing that against public transit constraints doesn't really prove much.