so ... do you defend the selling of indulgences back then?
You are throwing a red herring. Corruption deserved reform, not a revolution and the creation of a new religion.
Protestantism has nothing in common with the Christianity that emerged from Judaism. Or the Christianity of the Roman martyrs.
It’s objectively a revisionist form of Christian faith that would have been foreign to 1st and 2nd century believers.
There’s not much difference from the Mormon belief in the Great Apostasy and the idea that authentic Christianity went underground early on only to be magically rediscovered by the 16th century’s Joseph Smith and Brigham Young (namely Martin Luther and John Calvin).