Agree with @jonathanvmv8f@lemm.ee on intro text. Some tech blogger will make the first few sentences really catchy to keep you scrolling. If in your case, I think what they may do with the "Introducing Decentralized Chat" article will be like:
Have you ever imagined having a completely private and secure chat app that keeps your messages only in your browser?
There are already so many chat apps in the market, so why are we building a new one?
Signal is great, but does it mean that we don't deserve a chat app that is even better?
(I am trying my best...)
On the other hand, I see that most of the time when people post on Hacker News, they simply put a link in there and people will watch and comment. I don't have an account myself so can't say I am sure, but would it help generating some traffic as well?