The Chaos Communication Congresses have sold out in seconds every year for a decade. Visitor numbers are limited only by how many people they think they can fit. It is unrivaled in technical, medial and cultural relevancy in the region.
At that point, the question becomes not how you get people to come, but who you want at your event. And I'm very glad that for Congress, this means being unashamedly political, artistic, social, antifascist, inklusive. If that scares you away, that's by design.
Point that pushing subjective political point of views in technical conferences will not make the tech nor the political landscape better. Its actually divisive to push your own point of views without restraint and can actually backfire.
At that point, the question becomes not how you get people to come, but who you want at your event. And I'm very glad that for Congress, this means being unashamedly political, artistic, social, antifascist, inklusive. If that scares you away, that's by design.