"...so entirely at odds with..."

That sounds a bit like "why would you even want to run Photoshop on Unix? It's not open source! It's an entirely different philosophy!"

Many people balance different needs and values. Someone might like the idea of open federation but still need to follow people on Twitter for their day job, or simply follow a thousand interesting people that they don't want to simply drop just like that, to enter into a comparative wasteland.

Providing people with half-way solutions actually encourages more people to come and transition smoothly.