Of course there have been errors with past canonizations. There is basically no historical proof that St. Joan of Arc ever even existed. However, the fact that errors are "allowed" does not give the Pope license to "lower the bar" on what qualifies a person for sainthood.
I agree wholeheartedly that it is improper for this Pope to "lower the bar". He already did it once in eliminating the "devil's advocate" function in the beatification and canonization process back in the 1980's. This is just one more step. My point is: a. Catholic teachings do not require us to agree with him; and b. any mistakes he makes in this regard can be undone.
Wagglebee, I've seen some outrageous and erroneous statements on FR before, but your denial of the historical existence of Joan of Arc is quite possible the most outrageous. What are you smoking?