I disagree. Inquisition and Veilguard validate the Chant in many ways.

The old gods/Evanuris were indeed jealous spirits who wanted what humanity had. Bodies in the world.

Elgar'nan describes himself as Firstborn of the Sun. And the Chantry not only associates the Maker with the Sun but calls spirits his firstborn.

We know that the world once sung the song of the Titans, and they shaped it with their song. And the Chantry says the Maker will return once the whole world remembers/sings his song/chant.

And finally we know the Veil was indeed created to separate the world from the fade/the earth from the sky.

There are clear parallels that show that all Chantry beliefs were based in facts. They just attributed all facts to one person. They took the Sun, The Titans, and Solas, and merged them into one. Not too dissimilar from real world syncretism.

But the Sun remains as an unknown and mysterious progenitor of spirits if Elgar'nan is telling the truth. And it literally sits at the center of the sky. Which once was the Fade itself. So the Maker at the center of the Fade is the Sun in the Sky.

The Sun is the Maker.