I’m fine with multiple networks, people might want different things and it’s good that other projects can explore a variety of directions.
The only fragmentation that bothers me is intra-network like Fedi has, where servers block users and websites over the egos of fragile jannies. You’ll never have that fragmentation here, and hopefully Blue Sky finds a way around it too, even though it’s more similar to Fedi than it is Nostr.