SAD - this writer does not understand the history of catechisms in the Church nor the problematic way that this specific catechism was developed.
Catechism work best when they developed and used by national conferences.  Second, they need to be updated frequently - reality is that by the time a catechism goes to print, it is already out of date.
Third - catechisms are not the core of our faith journey - they are not a replacement for God.