In face to face ... Most people want to conform to common and uncontroversial interests or they blow up.
Ideally what you say can be easily done by Reddit or FB or YouTube. Take for example, PBS Space Time. There is a community there or in reddit. There is intense discussion. If you think people would share calendars etc then that is a big ask. Maybe. Maynot be. There may be diversity accepting PBS Space Time persons and not accepting persons. That is the reason people sit infront of their own screens and type only about that. If they disagree then they can downvote and move on.
Face to face means safety, open acceptance etc.
BUT wish you all the best. It may work. People may share: https://www.reddit.com/r/quotes/comments/8605g9/people_just_...