Are we though? Because it looks like you're on kbin and I'm on slrpnk.
If either one of our instances decides to implement proprietary features that Threads creates (the second E in EEE) and the other one doesn't, that could break the experience of us being "here" together.
I'm a Linux user. That "fragmentation" is probably a good reason for why that hasn't been extinguished either. So as far as I can tell, yes, I'll enjoy the resilience that that implies without fear of it being extinguished.
Well, you can stick to instances that federate with Threads even if/when they misbehave then, but having the option not to is pretty great, from my perspective.