The post he was responding too wasn't any kind of civil or even logical discussion. It just said his examples and analysis were borderline garbage with no justification.
Which is a fair point. I actually had originally drafted a much longer reply which included additional problems with the figures and comparisons [1].
But after about 10 minutes I realized that the author wasn't making a financial argument from the numbers, he was making an emotional argument with hand-waved numbers for garnish. And that, despite my interest in the issue and agreement with his conclusion, it simply wasn't worth that kind of time.
[1] e.g. $200/20,000 miles for car costs beyond oil/gas/tires is laughably low; ignoring parking/toll costs in the no-commute/used-car case; considering lost time in the commuting case but not lost-personal time in the no-commute case; assuming financing in the commuting case and savings for a used car in the no-commute case; ... generally just considering worst-case for the commuting case and best-case for the no-commute case in almost all things
