It feels like every federated network will be judged by the worst actor in that network, whether or not they are isolated from each other. As a result it doesn't matter (for public opinion) if there are strictly moderated mastodon instances because they will be associated with the free-for-all ones by the Mastodon name alone. This is different from how the internet as a whole is interpreted, where both HN and 4chan can exist without impacting each others reputation.