Using #Mobilizon is a great way to contribute to #Openstreetmap: if you want to publish an event taking place somewhere you will need OSM to know about that place so you'd naturally driven to contribute the missing places (or run away in frustration)
I'd recommend you to follow me on Mobilizon but I've yet to understand how you can follow the events from all groups I'm part of, if possible
at all ( see https://floss.social/@strk/112778398495575866 )
@birb are you able to follow https://mobilizon.it/events/going/2ftngiT3pp9rYU92FKK2Ru/atom ? It's actually supposed to be from an ActivityPub aware software but for some reason it doesn't look like it allows following "profiles" ( @strk@mobilizon.it ) - maybe @mobilizon@framapiaf.org or @mobilizon@mastodon.uno can help about that too