Ecs are largely about how you use your time outside school, and these are great because they build on interests, and also have benefit to others.
And frankly, having had a kid who was a soccer ref for a while, this is an activity that has a lot of interesting lead-ins for essays, from what appeals (rule follower, opportunity to teach younger players rules) to those situations that come out of it (realizing you don’t see everything, getting yelled at by adults, being fair and benefiting someone who has treated you badly, being granted authority because of roleetc.) All of this is a great way to show who you are.