Lets face it someone is going to be race gated for a reason at least one person will think is pointless or dumb, its going to happen. Do I think one of the gender gated romances will be one? No not really I still think its the last two that haven't been announced, but face it we are going to be upset by the reason no matter what.
[PAUSES] [NODS HEAD] Yes, this seems accurate.
Now, I'm more apt to go with it if it's explained well, even if it seems silly. Vivienne is bisexual and gated only for humans and dwarfs? Well, she's politically driven so being involved romantically--which is different than working together to save the world, somehow--with an elf or qunari could ruin her. Solas bisexual and gated against dwarfs and qunari? Well, dwarves don't dream and qunari seem to dream differently, and what Solas wants in a partner is someone he can share his time in the Fade with.
Give me something like that for why the LI's are race-gated, and I will appeased. 