What is wrong about having a direct chatting room? it is for those who want it, which is not a substitute of the forum.
it's there ,join it if you like.
You should not put content in it, that wasn't the purpose. However, you can chat with others in different topics and try to answer some questions directly and so on.
You don't get it.
I don't even have enough time create my own content, let alone chat to others.
At least responding on the forum builds up my own forum, and isn't really time wasted.
Chatting on some discord server and answering question on there adds no value.
The same thing if you email me with a technical question, I have had to set an automated response for that telling people why it's better to use the forum.
If you don't want to hang out there too much, it is ok. Just create the channel and invite people here on forum. Then you could appoint mods who take care of the server and its internal channels. After that, everything goes smooth for ever.
I've had a Discord channel for like 6 months now, knock yourself out.