Is it really idiocy? The Dalish may think the deities they worship are Gods but like Morrigan says, "What does that even mean?"
From what we know about them Sera could be correct about pegging them as demons or spirits. Solas implies that their either that or powerful mages. And from what we've seen and heard about the Gods they do share a few similarities with Fade beings;
- They lived in the Fade. Spirits/Demons are the only other native creatures that live in the Fade.
- When Mythal was "killed" she was reduced to a fragment of herself. Spirits/Demons also become fragments of their former selves when destroyed, becoming wisps.
- Mythal fused with Flemeth. What is the only other type of beings capable of such a thing. Yep, Spirits and Demons. She even screams about Justice which is highly familiar.
- The Gods embodied archetypes, emotions and themes, like love and vengeance. Spirits and Demons do the exact same thing.
That list isn't exactly decisive proof that their not Gods (whatever the hell that means in this universe), but it's not as if the accusation that their demons is completely unfounded, especially once Mythal/Flemeth shows up and reveals things about her nature.
Honestly, though after Flemythal refuses to give a direct goddamn explanation as to why she couldn't reveal herself to her people and instead replies with her typical vague horsecrap about "what was lost can never be returned" I would probably consider the whole pantheon a bunch of arsehole demons too. I mean seriously, your god who've your people have been worshiping for centuries wouldn't even respect you enough to give you a straightforward answer after everything you've been through... I don't even think she apologized not being there to stop all the horrors that have faced the elves after the fall of Arlathan.
Ugh.
The Dalish don't need them anyway. Them and the Maker are no better then nobles, always punching down and getting little people killed in their damned internal squabbles.
****'em all I say.