There's no 'lack of rationality'. What he means is, he's brought up these ideas before, and opinion hasn't changed. He can't understand why local feeds are valuable to instances that run as communities, so any opposition to it is considred 'irrational' and 'tribalism' to him. He's a white guy in tech, he's not used to having his opinions challenged, especially when they're being challenged in favor of building safe spaces* for communities that normally face oppression and discrimination. 🧵