Yes, I think that part of the article is economically ignorant. The data most certainly does not speak for itself though as crucial context is left out as you mention below. That’s bad journalism.
That was one chart out of 8. We agree nominal CC debt doesn't mean much. My point is that, as a whole, the charts in the article show that the Biden economy is doing fairly well. If you want to nitpick the writer for one misleading chart, or for perhaps trying too hard to appear "fair and balanced," that's okay. IMO that doesn't ruin the credibility of the entire piece.
Otherwise, I'll save my scorn for a lot worse "journalism" out there.
I understand credit reports, I just don't understand why a report is even being made on that and framed as relevant to the economy. It's a figure with no meaning, some bastardized mix of 'how much people spend on shit' and 'how underwater everyone is'.
Although my assumption is that reported aggregate CC debt is heavily based on statement balances reported to credit agencies, the methodology is likely more complex. Analysts know who all the major CC issuers are, and they regularly report their credit portfolios in financial results. The Visa/MC/etc. networks report transactional data so they can somewhat model behaviors from that as well. Disclaimer: I'm not an econometrician.
Total CC debt may be too fuzzy here, but one can look at outstanding auto loans, which have exploded in the past decade. Late payments and delinquencies are still very manageable, but they are trending up.