That's exactly it.
He put himself through it. It was completely unnecessary and it was
his choice to do it this way. That doesn't justify any of what he did, if anything, it points out the absurdity of your response. If someone had
no choice but to do this your defense would make more sense, but this dude just planned his life poorly and used capital to make up for his mistakes. Rent is free, that means he has parents who own a home and let him live there after reaching adulthood. He has a good credit card, that means he had parents who helped him with financial literacy and likely paid his bills for the first few years to help him build his credit score. Exploiting the people and resources (especially carbon emissions) around you for such cockamammie plans is dumb and antisocial and this person deserves to be ridiculed.
Remarkable, the sycophancy on this site. In what world is wasting a massive amount of other people's resources to save a couple thousand dollars in your pocket anywhere related to the "hacker spirit"?