Prime example of interracial pairings being bad is ishgard; he'll, a pretty major plot point involves that.

I do think, overall, how accepting it is of interracial or gay couples depends on the region/town/people. Some places have different traditions that are more "traditional" and others are more "progressive".
For miqote, due to them being so rare, gay males would be considered bad, just from a survival point of view. Females pairing with other females probably wouldn't, due to the same reason (only can get with males at certain times, so why not with other females to stave off frustration?) as long as they do have children when they can