Hey, another bi/queer/likes-lots-of-genders person here! *waves flag*
I just wanna add, I know that for some people sexuality is a hugely important part of their general identity, and one that defines the way that they see and experience the world - which is perfectly fine, valid, and fair. For others, like yourself, it's less important, and many of those people feel that a focus on sexuality can be limiting - which is also fine, of course!
I just thought I'd point this difference in opinion out because, well, I find the ace!Solas vs. sexual!Solas debate horribly annoying and boring, but I think it's worth understanding why people also care so much about it.
idk, I think you're right, the whole thing is massively щ(゚Д゚щ) inducing because it's canon that it's ambiguous and up to the reader and probably the Inquisitor in question and that's damn great. It appreciates that this game is an RPG, it involves roleplay and headcanon, whilst also accepting quite happily, yeah, Solas could be ace, go for it, and doesn't shut fans down.
but I will add, like above, sexuality is really important to some people, so I can understand why people get invested in fictional character's sexualities in general, (for some people knowing who a fictional character has banged, or loved, or both, is p. important and reassuring for them, and helps them figure out their own identity in seeing it reflected in fiction, if that makes any sense) it's just I don't think it makes any sense to get upset over it in the case of Solas.