A lot of people do actually. Lots of open source projects mention a dedicated matrix room/space on their project page for example. Regarding discovery: Can we presume you have used the 'Explore rooms' functionality of your matrix client? (Element has this).
I just ask random people in matrix, "Hey, do you have rooms that you recommend?" works for me
You don't. For me, it's for friends and organisations and parties
So no one uses it for wider communities and meeting new people?
A lot of people do actually. Lots of open source projects mention a dedicated matrix room/space on their project page for example. Regarding discovery: Can we presume you have used the 'Explore rooms' functionality of your matrix client? (Element has this).