I had a user struggling with that some months ago too. (And we also noticed another forum where this came up, but the post about the problem was auto-deleted. But for the rule of three, and since that is a Discourse customer, I will add the link to the deleted post here https://lovehoneyforum.com/t/discobot-tutorials/257800/1045) We wondered if it’s intentional and it seemed intentional to simplify the interface on conversations with @system when PMs are generally disabled. Maybe no one has thought about the Discobot tutorial.
But there are lots of edge cases that currently break the tutorial: Will the Discobot tutorial work with flags disabled? - #9 by Moin and I forgot the add that one when we found it in March.