There should be a choice if you want to check your 10KG bag as a status holder . Everyone is different . For me I never take luggage in the cabin I always check a case. The free additional piece that I get as Concierge obviously means I never have an issue even on long trips.
If I ever happened to be on a Saver fare (rarely) I would like the option to check it . Just because something is classed as a benefit does not mean that is a benefit for everyone.