The Nethack story of Sery the tourist
that seems rather complicated? You would share your desktop with people on jitsi? This requires bandwidth :( but it should work.
On the other hand, you can use ssh / telnet to connect to a public nethack server https://nethackwiki.com/wiki/Public_server run a game and allow people to view it by connecting to the server too.
Open instance in the spirit of netizenship. Cyberpunk leaning, tech-forward, available to the public; I provide a lot of services that no one but me really uses, just 'cause. https://drastical.net/