I disagree. Ultimately, if God is the originator of wicked ideas, such as the Holocaust, then he is indeed wicked. If we condemn Hitler for the Holocaust, what must we make of the one who gave him the idea?
If your religious beliefs require you to believe that the Holocaust is a good and God-ordained thing, why doesn't that raise questions as to the veracity of your religion? If you end up concluding, "The Holocaust wasn't bad", that's basically the litmus test for an error in your logic.
If God is so wicked as to cause the Holocaust, why trust that he's working for the
good of those who love him? If he's willing to go to such ghastly lengths, it's conceivable that he would also lie. So, why worship him? Why trust that it's all for the greater good?
I'm honestly not trying to be antagonistic or anything, I'm genuinely just trying to fathom how you could believe in, and worship, and trust, and call 'good', a being that would allow and instigate something like the Holocaust

.