Contrary to popular believe Luther was not that flawless shining beacon of reformation he's often made out as, he and his believes came with their very own issues. Like him being a rampant anti-Semite and his views held a lot of weight with the German people. His influence on those matters can in large parts be directly followed to what happened in the Third Reich where a majority population of Christians (96%+) ruthlessly hunted down all "undesirables".
If nowadays anybody would publish a book called "On the Jews and Their Lies" you'd be hard pressed to defend such a thing without coming across like a total asshole with Neo-Nazi tendencies. For Luther is was merely one publication among many showcasing his deep hatred for Jews, yet this barely gets mentioned when his person is discussed, like it never happened.
Even in Germany, it's a rather recent development for people to shine a light on the questionable past of the "big reformer". During the last German Protestant Church Congress a protest group (they protested to stop government subsidies for churches, yes that's an actual thing in Germany) put up a large statue of Luther with some of his most distasteful quotes [0].
Organizers called police, police declared that these quotes are "Volksverhetzend" aka "hate speech/incitement of the masses" and with that they could ban the protesters from the premises. Mind you: Police declared Luther's quotes as hate speech, not statements made by the protesters.
[0] https://hpd.de/artikel/luther-polizeilich-attestierter-volks...
How can you generalize about organized religion from a quote whose thesis was specifically a disagreement with the largest organized religion in the world?