And if a human wanted to know what is the kind for "event deletion" you could tell them that it's "delete_event", instead of "Kind 09".
Discussion
Kind 5
But still, it's harder to ensure devs all call it delete_event and not deleteEvent or delete_evnt or Delete-event, be it on purpose or by accident. Kind numbers help ensuring that. But yeah, it's not the most human friendly in terms of readability.