@admin i don't have an oppinion as long as they don't say how the want to connect. Imagine flickr is sending all it's post's to the federated timeline ... that would be a crazy amount of data which smaller instances most likely won't be able to handle. So even connected it would lead fast to deferated flicker cause running costs or complexity ... and instances who defederate flickr might loose users cause yeah they can't connect everywhere they want...
(at least that's what i got from reading about the growing pain's in the last few weeks)