Which Catholic is Correct About Martin Luther?

This picture was taken from a recent Facebook discussion group. The picture was augmented with a long diatribe explaining how awful Luther was, from a Catholic perspective. Here was my response:

What you've provided is your personal opinion about Martin Luther. If I'm going to pick personal Catholic opinions, I think an actual Pope's opinion is more relevant than yours:

In 2016 Pope Francis said that Luther was part of a movement giving “greater centrality to Sacred Scripture in the Church’s life.”

Pope Francis has also said: “The spiritual experience of Martin Luther challenges us to remember that apart from God we can do nothing. ‘How can I get a propitious God?’ This is the question that haunted Luther. In effect, the question of a just relationship with God is the decisive question for our lives. As we know, Luther encountered that propitious God in the Good News of Jesus, incarnate, dead and risen. With the concept ‘by grace alone’, he reminds us that God always takes the initiative, prior to any human response, even as he seeks to awaken that response. The doctrine of justification thus expresses the essence of human existence before God.”

Check out this Catholic response: 

"The pope is only infallible when it comes to dogma and only when he sits on the chair of authority."

Wow, that is a complete disconnect! I never mentioned anything about papal infallibility. My point was to highlight how this Catholic Facebook participant and Pope Francis have drastically different personal opinions about Luther. Why should I accept what some random person on the Internet claims and not the opinion of a Pope? 

When you're interacting with Roman Catholics about Martin Luther, you are interacting with their personal opinions about Martin Luther.