I'm just confused as to why Star Trek fans, of all people, seem to have a problem accepting non-human characters. If anything, there haven't been enough aliens in the main casts. TOS and DSC have been especially poor in this area.
TOS/TAS: 1 out of 3 (Spock, although he's half-human)
TNG: 3 out of 9 (Data, Worf, half-human Troi)
DS9: 5 out of 9 (Kira, Odo, Worf, Dax, Quark. Also the augmented Bashir and the Emissary Sisko were "more than" human)
Voyager: 4/5 out of 9 (Tuvok, half-human Torres, Doctor, Neelix, Kes. Also, Seven was pretty Borgified)
Enterprise: 2 out of 7 (T'Pol, Phlox)
Discovery: 3 out of 7 (Saru, Tyler, half-human Stamets. Also, Lorca was from another universe and Culber has quite abit of otherness due to his resurrection via jahSepp. And, of course, Michael is Vulcan in all but DNA)
The worst offender is Enterprise, which makes sense given its time period. Discovery is actually better than TNG (although TNG had many Data/Worf episodes that skew the perception).