If the descentralization of social networks continue, we will have to prepare for the eventual rise of the instances wars, where people will start to fight about which instance is better and which one is weird to be in and so on, but that’s for the future of us all.
I can imagine other instances defederating from each other over minor or uncontrollable reasons. I’d hate to keep switching to new instances if that were to happen.
That’s also a fair point, although I hope most serious instances only consider defederating from another instance as a last resort.