Who is bashing Luther? If there is bashing, it is at the front door of the Church.
Excommunication is an approved form of persuasion that is self limiting and quite charitable. At any time those excommed can repent and return to the community. The olive branch was extended to Luther as well. We all make choices, and once out of the protective communal sphere, the draws to human weaknesses took anchor. Many like him such has Mohammed,Waco,Karesh,Jones and Henry could not give up the enticements of social popularity, and the draw of thousands pressured to reject Christian principles finally found an outlet in Luther that would substantiate the distorted concepts they were tempted with. The pressures outside of the Church were too enticing, and he gave them the changes that he thought were needed.
The prince of this world never satiated, other fall out sects demanded their own changes from him and so the seed for schism cultivated fields of errors in the likes of other man made protestant religions.
The sequence of errors are chronicled in NewAdvent. So no, there is nothing that the Church actioned that presented a closed door to him.
If Luther did qualify, I can think of one devout and holy Cardinal that would certainly be the first candidate for a commemorative stamp.
BTW: Catholics know that it is not spiritually healthy to delve on judicial decisions the Church has finally decided on.