I believe the thinking should be the other way around.

No one wants to store your code, and you shouldn’t store anybody’s code either. But suppose you have a group of people who want to collaborate on (or just mirror) a codebase, so they already decided to store it on their machines. This project gives them a decentralized tool to coordinate their efforts, and their code/issues/patches will be stored and accessible as long as they are interested in it.

Like, the tool doesn’t give you a reason to use it, but if you have a reason then here is a tool to help you.