I pointed out Cullen since that's what people are assuming and wondering over. I'm not afraid of Dorian and Cassandra being race-gated at this point.
Race-gating is still romance and gameplay issue and I think should be discussed as well in romance thread. Like I said, for some players it's big deal although it's different thing as sexual orientations and gender-gating. It's not like changing your race in the game is easy, you have to build your character around the race and backstory after all.
You can definitely discuss it. I wouldn't assume it's my place to tell people what they are or are not allowed to discuss concerning the romance feature.
Anyone could be gated at this point. People have been really sure about a lot of things that turned out false. I've followed the romance speculation and, trust me, it's definitely not always what people assume it will be. Nobody was guessing Iron Bull would be ungated (except Vaapa, and we will never forget) and nobody thought Solas would be gated the way he was. Anyone could be smacked with the last of the gates, at this point. Vivienne and Cassandra are both actually really good guesses for the gates right now. Sera, too, if Vivienne is a bisexual LI. If Vivienne is the last LI, it will very likely be a female LI that's gated, and if she's bisexual, it could easily be any female beyond Josephine.
I'm not saying race gating isn't something you have the right to be disappointed over. You do and you have a right to complain. Where I draw a line, personally, is saying it's a bad as people getting less options for their gender/sexuality. It's an issue, but it's not an issue on the same level. Making sure people are able to enjoy the romances and their race choice is important, but it's not as important as representing real life groups. That doesn't mean they should throw race choice issues under the bus without serious consideration, but it should be the lower priority.