Was he wrong about selling indulgences? About the corruption of the church? Henry Ford was also an anti-Semite yet one of his vehicles sits in my driveway, although I cannot drive it anymore. We can separate the man from the movement.
ML thought that, after he ‘purified’ the Church, Jews would see the error of their ways and sign up en masse. When they didn’t, he threw a tantrum. He certainly had many valid points about Church corruption, and those points did ultimately lead to internal reform at the Council of Trent. At the same time, his writings show that he was not a saintly person. He definitely had a mean, vulgar streak.