Blame-shifting par excellence.....
No, the blame lays directly in the hands of the Catholic church.
According to the Code of Canon Law, "Insofar as possible, one to be baptized is to be given a sponsor who is to assist an adult in Christian initiation, or, together with the parents, to present an infant at the baptism, and who will help the baptized to lead a Christian life in harmony with baptism, and to fulfill faithfully the obligations connected with it" (No. 872).
Denial is a defense mechanism postulated by Sigmund Freud, in which a person is faced with a fact that is too uncomfortable to accept and rejects it instead, insisting that it is not true despite what may be overwhelming evidence. Admitting ones parents were remiss and ones own complacency in an issue of this importance is difficult and painful.
The only questions are:
1) With the demonstrated deficiencies in your Catechises can we reasonably expect you to know this?
Now that you know about this what are you going to do about it?
Will you remember this admission of your poor Catechesis the next time you attempt to bloviate authoritatively on the Catechism because you were "born and raised" Catholic?