I don't see how anything can be coordinated when so many options are presented in a confusing way.
Of course, they don't have to choose Lemmy / kbin instances, but I'm worried that a lot of people will stay on Reddit given the inability to properly communicate alternatives.
It's the same thing with multiple instances now. The stronger and more popular will inevitably survive. I'm putting my eggs in the Lemmy basket, but other alternatives might end up being better. And if that is realized, then I fully intend to switch again.