A dumbed down version of my understanding on what Cass does is that it basically helps big companies pay their bills and keep track of their money.

Source: https://seekingalpha.com/article/4577674-cass-information-systems-stock-dividends-covered-cashflows-earnings-buy?source=feed_all_articles

Unfortunately, Gerwig and co-writer Noah Baumbach have dumbed these ideas down in their execution, relying on heavy-handed monologues dispersed throughout the latter half of the film.

Source: https://kenyoncollegian.com/arts/2023/08/excess-consumerism-clouds-feminist-critiques-in-barbie/