You can draw a line from Xenowhirl's disassembly of Sonic 1 and Simon Wai's research of the Sonic 2 prototype to the creation of Sonic Mania and the blossoming fangame / ROM hacking community, and from there the careers of a lot of indie devs. It's not that these people aren't capable of talking to each other, it's that they get to know each other in a personal and professional context by bonding over a project they have a shared passion over. If these disassemblies just popped up on GitHub one day, and if the fan games and the ROM hacks were created by solo devs with an AI model... well, we end up with quite a few neat projects. But we don't end up with the rich, vibrant communities that get created in the inherent process of collaborating on a project.

Of course, in a post-AI world people will still want to work together on things. But these sorts of tools do disincentivize it. That's the point I'm getting at here.