There's also a good reason to be dubious about the 'nazi bar' problem on substack. There's an organisation in the UK called Hope Not Hate which labels people 'neo-nazis' often with made up quotes as evidence. These articles are then used by journalists ("journalists") in mainstream press to freely label authors as neo-nazi citing their source as Hope Not Hate, off-shoring their slander.

Which is not to say there probably are some incredibly stupid neo nazi bullshit content on substack obviously. But there will also be these more prominent writers who have been falsely labeled as such.