Just require users to be logged in to view posts, and then limit them to seeing a few hundred every day. That should stop them from stealing the content.
I used xmpp for years before Google talk federated, and I was so excited. I thought xmpp was finally going to be mainstream, but then they used their weight to control the direction of the protocol, then cut and run. Xmpp has mostly recovered and still a great protocol, but Google kind of messed it up before kicking it to the curb.
Edit: This page no longer exists, but as recently as 2020, Google had a page about how dedicated they were to open chat standards, 7 years after they introduced hangouts, which was once again a closed/proprietary protocol.
The nice part is that they had two options. They couldn’t prove the safety of Starliner completing the crew test flight, but it’s good that there are 2 commercial crew vehicles that they could have chosen. That kind of choice is what the commercial crew program is all about.