[Tagging] club=scout for similar organisations

[s8evq]

Hello everyone,

I'm a relative new contributor and have a question about tagging "club=scout" and "club=youth". 

What about similar organisations than Scouts? This might not exists as much in other countries, but here in Belgium we have KSA, KLJ, Chiro and Scouts (and a whole bunch more). These organisations are very similar to how Scouts operate and what they stand for (perhaps a smaller emphasis on the outdoors).  If we look at the amount of members in Vlaanderen, they are equal, if not bigger than Scouts:
Chiro: 112.000 members
Scouts: 82.000 members
KSA: 32.000 members
KLJ: 22.000 members

So my question are:

1) Why does Scouts have it's own value in the club tag? If club=scout exists, why couldn't then club=chiro also exist?

Something doesn't seem right with that idea.

2) According to the wiki there's also club=youth, but it's not used and amenity=community_centre should be used instead. 
Reading the wiki on amenity=community_centre (https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dcommunity_centre#Differentiation): "When the centre is open to general audiences (...) gathering for particular activities, it should be tagged amenity=community_centre. When it addresses an audience with specific problems, and/or is staffed with professional helpers (social workers, nurses), amenity=social_facility would be preferred. "
Both don't fit the case here, as these places (just like scouts) are only open for members.


Help is appreciated.


Kind regards