I usually do play it bc I like Serena (only follower they gave real substance), the Soul Carin and the Forgotten Vale, and because I'm a completionist. The DLC itself is worth playing, but the beginning is absurd.
My problems are more with the quests and the faction itself. The characters in the Dawnguard felt so much more interesting, while I either didn't care for or actively disliked everyone except for Bloodmouth. There were a few good handcrafted quests, but you needed to get through the radiant quests to get them, and those were unenjoyable and often bugged. You were killing vampires more often than vampire hunters, while the Volkihar clan is ever present in the Dawnguard quests.
The fact that you're worrying about the left making themselves look bad when we're at the death camp phase of fascism is telling. I don't think you're a fascist, but I do think you're an uncritical "moderate" who cares more for decorum than substance, and such people are not allies.
It's all about how salient the demographic is to being seen. They'll be more likely to go buy jeans out of bigoted pride than almost any demographic you can target. They're both extremely simple minded and only now getting the mainstream recognition they've been craving.
sorry if it was triggering :(