RBBB can indeed be a normal variant in young otherwise healthy people. If the RBBB is a new finding when compared to previous ECG's taken then that indicates a potential change in the function of the heart then as such needs to be taken further.
So, young healthy dude with RBBB and no previous= no worries
Older, still healthy dude with new RBBB and previous normal ECG's = risk stratification for e.g. Ischaemic heart diseae.
Hence I suspect some of the variation in the stories I've read here.
Good luck Whirls, though I'm sure it'll all boil away to nothing
JR