It’s not really like MPI. It’s more oriented towards writing social software that communicates over the Internet, as a next step beyond ActivityPub. You could use it for a lot of things, but one example is to write federated software like Lemmy where you have lots of instances communicating with each other. But it makes things more flexible, you can really make any sort of social app with it.
I’m pretty sure the lists I’ve seen circulating also ban the word female… which is so bizarre