There is a simple reason for this. The typical Catholic in pre-Cana is probably already in a premarital sexual relationship involving the pill. The pastors of the Church feel that if we could at least get the faithful to return to the situation of the 1920's through 1960's, where Catholics who wanted to limit their family size used the rhythm method, this would be a great step forward in eradicating sin. This may be a poor prudential judgement on their part, but it is the path they feel they need to follow.
You cannot use NFP to avoid pregnancy for any reason other than a "grave" one. Illness, financial strain, etc. Using NFP just because you don't want more that 3 or 4 kids is just as sinful as using a condom.
This is totally mistaken, but we've discussed this before, and I can't expect you to produce any more proof of this assertion now than you were able to back then, namely none.
You are always informative, Hermann. I learn a great deal from your posts.
Rudness is uncalled for. I appreciate your respect as I offer the same to you.