Because of sharing. I think knowledge should be easy to share, like send a message. And the next move after we send message is about the other (receiver) save and learn the knowledge.
So sharing on our platform is simply publishing to make the knowledge available (and learnable with spaced repetition) to anyone with the link. What's the advantage of telegram?
The advantages here is about access the knowledge in a chat client and share it immediately (quickly and simply)
The receiver can view and save it immediately in the chat client also.