This is where it is up to the forum provider to include a section on the forum for how-tos.
As messages/system posts and even Discobot name can be altered. If a forum provider takes the time. They can indeed cloak the identity to a large degree from visitors/members.
A lot comes down to people who setup the forum and what lengths they go; to configure/customize the layout/ui
This is left as a choice by the forum team. I believe the Discourse Team shares some of the ideas of Linux. Many use Linux everyday and don’t know it.