Science disagrees on you with the harmless part. It is shown that violent video games desensitise people with regards to violence, just as violent movies do except there is a categorical difference interactiveness.

I don't like that fact either but to ignore facts because they don't mesh with my politics is bad.

The primary argument I am making is that Germany lacks freedom of expression, not that depictions of violence in video games are or are not harmful.

Germany lacks freedom of expression.

This may be a concern (regulatory risk) for companies who are customers of hosting companies that are subject to German law.