This was reported a year ago, it's now made it into The Lancet which (re) stated:

    HIM's hypervaccination occurred outside of a clinical study context and against national vaccination recommendations.

    Evidence for 130 vaccinations in a 9 month period was collected by the public prosecutor of Magdeburg, Germany, who opened an investigation of this case with the allegation of fraud, but criminal charges were not filed.

    108 vaccinations are individually recorded and partly overlap with the total of 130 prosecutor-confirmed vaccinations (appendix 2 p 12). 

His "reasoning" was transactional, he was happy to accept money from others to present for vaccination and give their details to fraudulently record them as "vaccinated".

Criminal charges were not filed because there is no evidence that he sold his vaccine certificates.

As I recall from the reporting almost a year ago the investigation was opened because of a suspicion that he was doing something fraudulent.

The lack of charges and lack of evidence neither negate nor support the suspicion - they just leave it hanging.

If there's any post event interview with the man the gives his side of the story it'd be interesting to read, but even that would have issues as he may initially have thought to sell or pass on certificates to others but since changed his story once an investigation was opened <shrug>.,