I'm going to preface this before I start. Any kind of racism and prejudice has no place in modern society, and it's disgusting and dangerous.
What I'm going to say is probably controversial, but I found Riya's behaviour towards the PC hot. It's definitely not acceptable in real life, and would not be acceptable between anyone else but consenting partners. I have a humiliation kink, and so the idea of being 'lesser than' and treated in the way Riya treats the PC gets me going in that way. It would not be acceptable in real life, and I wouldn't find it sexually appealing in real life. In a fantasy world, about fantasy races? I really enjoyed it. She wasn't just a shitpost character, she fulfilled a niche kink for me, just like Sera does, the caterpillar lady and space Yakuza does. I think that's where a lot of people get angry, because they don't realise that some people find her behaviour/scenes sexually appealing and think her only purpose is to spark controversy. I do, and I wouldn't mind more characters that engage in that kind pet/race play (if, perhaps, to avoid controversy next time play up that it is a kink thing and the character does not actually believe dog-aliens or what have you are actually lesser than). Just like some people enjoy the pornified violence, bimbos and etc., I really enjoyed the pornified specie-ism.
Please don't crucify me for this. I 100% realise that my kink should never appear in real life, and would not be appealing in reality and that it is disgusting for me to be turned on by this behaviour. The only reason I enjoy is because it is a fantasy world, with fantasy species and no real life consequences/dangers. Please don't crucify me.