I think that the term Aviation Interest can cover a multitude of things.It can be anything from spotting,GA flying,gliding,microlights,aeromodelling etc etc.
Is this interest include drinking with pilots and talking 10000ft talk?
It's too general to say that an Aviation interest helps.Everyone is different.Having a pilot whinging at me,because he was number 21 today is not that interesting.Half of Aviation interests have nothing to do with ATC,and long may that continue.