I disagree. When you create an instance, you want it to be advertised by its name so that people can find you immediately and register. If people are advertising Kbin, Lemmy, or ActivityPub in general, they will find the landing page of the software in question, perhaps reach a list of instances, and in that process there's a good chance they'll bounce because they have no clue what instances to pick. Furthermore, when the network in general is promoted, it does not promote any particular instance with its own culture, which is the lifeblood of a forum. If people get to your landing page, they will immediately see the top posts and people commenting. This is more likely to pique their interest and make them want to be part of the community. After registering, they can still discover that your instance federates and is part of a much larger community.