LinkTree" and their competitors come up with "EventPages" and create a spec for standardised event sharing across different platforms. This enables platform agnostic event sharing for peoples music gigs, personal parties, and more, with the organisers no having to remember to keep every page up to date, since there is only one page. Furthermore, the events can spread organically even to platforms the organiser isn't on, since it is standardised. This means that an a band can plan their gig on EventPages and posted to Facebook, but a fam can share it too mastodon with a few button presses.
EventPages is a proposed spec for event sharing, by LinkTree and others. #openvraag is it using ActivityPub that has events in its ActivityStreams, that no one ever uses? Vgl https://www.zylstra.org/blog/2023/09/the-search-for-an-os-meet-up-replacement-mobilizon-edition/