I understand in-universe characters being more inclined toward one culture, religion, or whatever. Not out-of-universe devs (the ones with the mighty pens that can write any character in or out of existence) supporting that by throwing plenty of characters to positively represent some in-universe factions but none to positively represent another reeks of narrative bias to me.
We don't have many significant elven characters in this game, but every single one of them just happens to anti-Dalish and possibly anti-"elfy". Solas hates Dalish and tries to distance himself from other elves; Sera hates Dalish and tries to distance herself from other elves; Briala hates Dalish and only wants to help city elves; Minaeve hates Dalish and wants to be left alone to study; Mhiris makes a cameo from the novel with the most actively hostile clan of the DA universe and gets absolutely no redemption arc in-game. Despite the devs knowing that most of the fanbase already had a sour view of them from previous games and novels.
I mean, the Qunari were hated, and they threw us the intentionally likable Iron Bull (the first Qunari with a greater emotional range than a stoic "No.") The Templars were largely hated, and they threw us Ser Barris and former Templar Cassandra. Even TEVINTER got Dorian, Felix and Calpernia as their positive representative character this game. Dalish? No way, having a character that has one nice thing to say about them would ruin that "All Dalish suck unless a Dalish PC specifically says otherwise" streak this game has going.
But see, would it make sense to have a character to come a long who liked the Dalish? Maybe someone who is fascinated with the culture, but someone outside who personally knows them and likes them? The Dalish are pretty wary of outsiders. I just don't see someone coming along who has an affinity for them. That wouldn't make sense. We'd need an actual Dalish companion, and I don't see that to be very likely as why would a Dalish break away from their clan?
We do get to encounter Dalish clans in all three games, and I don't have anything particularly negative to say about them. I don't buy the argument that the Devs hate the Dalish. I know people have said that, but I don't see that they are particularly harping on them vs everyone else, and even if I did see that, that still doesn't mean the Devs hate them.
It's like people who claim CS Lewis was anti-Muslim because he uses them as villains in the Chronicles of Narnia series. But that's not how writing works. You need a villain, you use what makes sense and drives the story. That doesn't make the writer anti anything. That just makes them a writer. The Dalish may be portrayed negatively (again, I don't see it), but that doesn't make the Devs anti-Dalish. They are just going with the story and staying true to the characters we have.