your info is not accurate. Luther, who is called FAther of Protestantism was a Catholic priest who couldn't sexually maintain as priests are required. He came up with the bizarre heresy that no matter what sin you commit or how often, you can go to Heaven... totally UNBIBLICAL. (Jesus said Go and sin no more... and Few make it to Heaven)
You are like so many Protestants, you believe the claptrap that some Protestant pastor feeds you.
Luther never, that I know of, brought up any kind of "freedom of religion" BS to argue against the Catholic Church.
this is what happens when people never see the other side of an issue, thinking they already know the other side without studying it in the least.
Scott Hahn was/is an unusual exception to that rule
He once hated but now knows and accepts Catholicism better than most people, C or P
But I doubt you'll check him out. People love to cling to their false notions