the sane response is to go “wow that is awful. the gaming community does indeed contain some terrible people, i am glad to be one of the good ones and will distance myself from this behavior”
I’d say the saner response is none at all. This seems like a pretty niche community issue somewhere on the internet involving at most <100 people. I doubt anyone here is closer then 3 degrees of separation from anyone involved. Why would you expect any of the outsiders here to “take a stand,” based on incomplete information?
The EU can and should ban government and business’s from using twitter as part of their official communications. But if private citizens wants to tweet, then sure go for it, even the EU with it’s less then stellar speech record, particularly with the labeling antisemitism, still allows freedom of association.