I don't agree with this. I have taught a series of Sunday school classes on Prayer several times and for an example of prayers of praise to God I always review the Magnificat - one of the great prayers in the bible. Mary shows us an awesome example of how to praise God. Also, Mary's last recorded words in the bible are the greatest advice one could ever receive: "Do whatever he (Jesus) says". Those are words to live your life by.
AMEN.
Your last posting words I am in whole hearted support coming from this Catholic.
I always took the Magnificat as a song of praise to God more so than a prayer, but then songs of praise may be prayers as well. In any event, thanks be to God for the miracle and gift of Christ!