Generally I disagree with most calls for defederation because I didn't join Lemmy to join an echo chamber. We're all enriched by diversity of thought and opinion. Even if we disagree with those thoughts and opinions. And playing "which account has access to which servers?" is an annoying game to play. Defederation should, in my opinion, be the last resort that a server takes.
But this instance is bot spam, it's not enriching the Fediverse but homogenising it with Reddit.
So no objections from me, good call flamingos!