"I think there are people who are confusing this with an issue of free speech. It’s not an issue of free speech to offer someone a privileged platform from a prestige organisation."
Er, no. This is precisely an issue of free speech, and they’re being invited to speak at a debate on free speech. This couldn’t be more about freedom of speech if it chartered a hundred helicopters, hovered them above the venue, and waved 60ft high banners with the words: "This is about free speech."