Sera's denigration of the elves, her disdain for Briala (who is trying to empower the elves) while supporting Gaspard (who uses racist language in his confrontation with Briala), and her tossing aside Lavellan unless she gives up her religion, are some of the primary issues that were brought up.
Yes, disagreeing with socio-political and religious views is denigrating elves. Video evidence has been provided for this, and disregarded, because it doesn't fit into your neat little box. Her disdain for someone that uses other people to further her political ends, which may indeed affect the elves, such as when she was sleeping with Celene while her alienage was purged? Surely that shouldn't affect her views in any way shape or form, right? After all, it was just elves... She straight out tells you that all three are liars, and she's not wrong... Then, of course, is your lifeline: People aren't allowed to break up with people over religion. You know, it's a really simple deal. You have a choice, you can stick to your guns, which is, in essence, throwing your new found religious beliefs in her face*, or you can lie to her, and keep your new found religious beliefs to yourself.
You really don't seem to have read much, if any, of this thread.
Irony?
Trying to twist bigotry and intolerance into independence is pretty ridiculous.
Trying to say that she has to bow down to your beliefs is pretty ridiculous as well. That's what this comes down to, however.
*Footnote: I say "new found religious beliefs" because, until the Temple of Mythal, this wasn't an issue. She does, however, give you advance warning that this could happen: She says it could work, if you're not too elfy. Since this is a known issue for her since you pick her up in her recruitment quest, feigning surprise when she lives up to her own beliefs, and trying to play the victim card, when you knew this is a deep seated issue with her is your fault, not hers. You thought you could change her into something she's not. You can't, and presto, she's a bigot for sticking to her beliefs.