The purpose behind the MSC is to ensure that when you add bots such as audit bots or so on to unnamed rooms, they do not show up as part of the calculated room name (or you end up with "Alice, Bob and SurpriseBot"). The bot should show up in the member list as normal, but just not prominently in the room name.
See https://github.com/matrix-org/matrix-spec-proposals/pull/4171
The purpose behind the MSC is to ensure that when you add bots such as audit bots or so on to unnamed rooms, they do not show up as part of the calculated room name (or you end up with "Alice, Bob and SurpriseBot"). The bot should show up in the member list as normal, but just not prominently in the room name.