Hello @vchn-mkr and welcome !
I like that idea a lot!
We have been experimenting on this here forum, with @outsidecontext creating a plugin for Discourse to show a user’s currently playing track, or the currently pinned track as a fallback. See Showing a user's ListenBrainz listens in their Discourse community profile
In the same vein, we could provide an embeddable widget that can be used on any website. I’ve created a ticket to track that feature: LB-1292
P.S.: If you are technically minded, we do have an endpoint that exposes that information: https://api.listenbrainz.org/1/user/MYUSERNAME/playing-now