> Why allow targeting some of them but not all? Either all should be disallowed (for the same reason that race, religion, etc are), or all should be allowed Ea

> Why allow targeting some of them but not all? Either all should be disallowed (for the same reason that race, religion, etc are), or all should be allowed Easy: as already mentioned advertisers love targeting. On the other hand, considering the current sentiment in society allowing gender and age as targeting category causes much less of an outcry (or even shitstorm) than race and religion. So, to balance earning vs risk for reputation damage the first two categories are allowed for advertising targeting while the latter two are not.