"Reverse racism", or whatever term you prefer has widely been accepted as a means to level the playing field. I think your comment is dead on; if this were a firm dedicated to hiring Whites and Asians, it would be lamented and thoroughly castigated, as it and this start-up should be.
It's a dangerous path, and sadly somehow you're seen as a racist if you speak out against it - I'm willing to accept down votes to speak the truth, as we all should.
Singling out specific ethnic groups to hire is wrong, it's that simple.