i think the most distinctive difference is that filtering of the fire hose

the fire hose is what bluesky calls the totality of the network regardless of who, what or why it exists

the largest threat to the network is a DDOS of the fire hose

compared to the fact that x is intentionally NOT a fire hose, which is widely documented by anyone getting banned that elon personally beefs with

so yeah, the fundamental design is what attracts people and why everything that’s tried to compete with existing networks “mano y mano” has failed— networks today generally boil down to dictatorships.