Why do you say they're "clearly aimed at technical people"? Do you know the minds of people who created them?

At least in the case of Nostr, the introduction text is definitely written for someone that understands tech vocab:

Nostr is an apolitical communication commons. A simple standard that defines a scalable architecture of clients and servers that can be used to spread information freely. Not controlled by any corporation or government, anyone can build on Nostr and anyone can use it.