JBW is a product of location and demographics too, don't forget.
JBW doesn't work when everyone is JBWing around other JBW people, in such a situation ethnics feel the burn and JBW is incredibly obvious to some and suppposedly non-existent to others (USA)
But if you go to a non-white majority area the white people will suddenly see how true JBW is, while ethnics won't really have to care for it (a handful of whites isn't really competition in among thousands of women)
Dating statistics objectively show that JBW -IS- true though.
This is probably where the confusion and denial over JBW comes from
Where aren't saying white incels don't exist, but that white incels have substantially more options for ascending that they are in an state incomparable to ethicels.