I dunno, but the article continues to be live, and I can't imagine Substack doesn't know how to scrub posts from their platform if they wanted to. We'll find out eventually I guess, so I'll continue to urge people to be cautious with this and wait a bit.
This might be a bug in substack? If you go to https://substack.com/@breloomlegacy it says "Profile not found", so they might've tried to scrub it
maybe some cache ttl hasn't run out yet or something :/