Is this a sensible use of Substack by a legacy media title? Tease the story, which links to your own website, where readers would have to create an account to read it?

Dunno, but I would have thought that if you wanted to offer an article to be read by Substack users who already have an account here, you would want to do it internally within the platform, no?

Maybe this is actually a great idea, but it feels odd to me. It smells of someone saying ‘Ooh! Everyone’s talking about this Substack thing! Shouldn’t we have a Substack too? Quick - post some links to our website there!’