Of course it can. Man is fallible. God redirects him on His own schedule. Your pathalogical need to reach hundreds of years into the past to support your hatred is a clear indication that your theories are nothing but ugly lies. Was Hitler a Christian?
You have quotes, I have quotes. Hitler was baptized catholic, made numerous public declamations of his faith, while Reichchancellor, which I have cited, & throughout the war, examples of which I have enumerated. and was not excommunicated by the PIUS XII, who outlived him, and Hitler attended no other church that anyone knows about.
By any reasonable definition that applies to ordinary folks, Hitler was a christian--you are straining a camel though a needle's eye, for obvious reasons, to see otherwise.
Did you read the text I linked to? Did you notice the source? Do you have even the most basic understanding of the Catholic concept of excommunication? Your intellectual dishonesty is profound to the point of being comical.
Sure. That must be the reason the head Rabbi of Rome converted to Catholicism at the end of World War II.