> The problem with this is not technology- its the lack of interesting meetups i want to join in my city

Maybe! Or maybe there's more going on than you know about? A meetup I regularly attend now existed in my city for 9 years before I found out about it - they just had no good way to advertise themselves easily.

> Eg meetup at least has critical mass of users and meetups

It definitely does. That's part of why I've made the Activity [1] feature - to give individual users something useful to do even before we have that critical mass of established groups.

[1] https://radius.to/documentation/activities/post-an-activity