The main source is the video, where you can see the GOS developer writing him live. For more context, there was a Google Drive link that is unfortunately not available anymore, but I found and uploaded it here: <https://www.swisstransfer.com/d/d75ff782-4a7d-4497-b04e-edd1...>

It has they initial conversation and disagreement in September 2022, after the GOS developer in question accuses Rossmann of being complicit with harassment campaigns again said dev., because he also gave the same 40K USD FUTO grant to other similar project and had some interview with their developers.

The second set of files are the text messages that feature in the video, after said GOS developer contacted Rossmann umprompted on May 2023 with the same type of accusation.

Feel free to peruse and make you own opinion.