Those who become flustered and afraid at the suggestion of those who follow other paths--those who demand that all confirm to their narrow view of spirituality--those are weak, yes. My Inquisitor has never explicitly denied the existence of the Maker, but has also not rejected the Creators.
And "as one of them?"
Don't even bother. These people are also trying to paint Cassandra as some fanatic, even though she is nothing but open minded.
Furthermore, the official Chantry view is not that it's the Maker and everything else is a type of demon. They only worship the Maker, yes, but 'Old Gods' are acknowledged powerful (probably evil) beings, considering they have physically turned into Archdemons, so the existence of the Elven pantheon by no means negates belief in the Maker. Powerful does not necessarily equal worthy of worship, after all.
In fact, this is what Mother Giselle talks about after you return from the temple.
Coming from someone who has previously admitted to knowingly creating impassible barriers to people who challenge personal beliefs, who has advocated for tolitatarian brainwashing regimes targeting of dissidents and even proposed genocide of political-military opposition groups...
Pot, meet kettle. You're black.
... what the hell? My first encounter with Xili was in a thread where she was systematically dismantling some weirdo who was getting all nostalgic for the days of his SS officer grandfather.
I think the Sera situation is much like the post-ME2 release Tali situation. Annoying character (though Tali was not annoying in ME1, before she was retconned into being in love with Shepard) becomes a revolting character because of how obsessed and hyper-tribal her fanbase is.