It was the Church “reformers” who demanded and got a new catechism, but the JPII and Pope Benedict stepped in and took over, and produced a really excellent, and basically traditional, catechism.
It is erudite, yet accessible, and as the article said, often very elegantly composed.
Well, if you believe Vatican II is “traditional”, then there’s really nothing I could say to convince you otherwise.
What I can say is I once believed as you do.
There are a lot of things that posters here didn’t think was true (especially regarding Francis)....until it was.