Martin Luther was no social reformer, that's for sure. I've read some scholars suggest that he helped create a general climate of reform, but he told the serfs who hoped for a better deal to shut up and obey their lords.
Worse than that, when they didn't and instead rose up against the lords, he told the lords they could obtain salvation by spilling the blood of the peasants.
Whatever church reforms he favored, he wanted to maintain the social status quo the Church rested upon.
Actually, I think he may never have thought of any alternative to the status quo. The church and state were married in his day, and he never challenged that. He created a new church, but he left the power to enforce that religion in the power of the lords, and conversion to Lutheranism was from lord to lord, with all the serfs required to follow, not from person to person.
Also, every one of Martin Luther's 95 theses concerned only one Catholic practice, which was indulgences. The book
A World Lit Only by Fire makes a pretty good case (IMHO) that Martin Luther's reformation was much more a tax reform than a religious one.
On the other hand, both the religious and governmental effects of that Reformation were immense.