This is an odd perspective on inclusivity, but I understand where it comes from. I would think it would be well within the mandate of the conference organisers

This is an odd perspective on inclusivity, but I understand where it comes from. I would think it would be well within the mandate of the conference organisers to pick talks that reflect the material they want to see presented and the conversation they want attendees to be able to participate in. The conference is a curated collection of talks, and will necessarily reflect an active political position held by the organising committee and a passive political position shaped by systemic issues. For almost all tech conferences, even the very large ones, the politics expressed are so bland and so unfocused that no one really cares about them. Almost no tech conference has the capability to seriously address systemic issues of inclusivity. I imagine LambdaConf's view resonantes with the audience on HackerNews, because it addresses primarily the former politics. The latter politics aren't a danger to most of the commentators here. The inclusivity of attendance seems to be much more defensible. Even under great pressure, I can see an event being reluctant to bar attendance. I don't know that any tech conferences ask unpopular people to simply stay away (even if they promise to be on best behaviour.)