That's....not really accurate honestly.
No, the original endgame of Vox Machina very much was the Whispered One, with the core themes 100% intact--the "changes" in the show are entirely because, as with every other arc, the campaign arcs followed TTRPG logic and pacing.
(Not a criticism. It was a TTRPG. Different mediums NEED to follow different rules.)
In fact most of the changes and 'retcons' in the show are really just turning the pacing into anything that makes ANY narrative sense outside of a wargame. That, and taking the opportunity to make forward references--now that they're crafting a coherent narrative and Matt has had a chance to do more in-depth original worldbuilding as Exandria and its theology expands into more of their own thing rather than just D&D Setting TM.
It's very obvious in both the show and the campaigns (and VERY sweet honestly) that Matt absolutely ADORES the Raven Queen in her classic incarnation and has continued to expand her importance. I also think it is, at best, intellectually dishonest to say that the portrayal of the gods "changed" in C3. They were really just being engaged with differently.
(D&D People TM in my experience are fundamentally allergic to a) the idea that other tables might run the gods differently than you b) the idea that gods are personifications of ideas, and can and SHOULD embody all facets of those ideas.
The sun is beautiful and life-giving and brings hope and exposes cruelty to the light. It will also kill you. Spend too much time too close to its power and you will get burned. The gods are people but they're also not. There are people who simply cannot handle hearing that without whining that they're chaaaaaaanging iiiiiit, they're ruuuuuuuuuinging the loooooooooooore because the sun god is eeeeeeeeevil now.)
Anyway. Tl;dr yes, the role and nature of the gods, what they represent and how, what it means and what worship means and whether or not you think they deserve it, is something that Critical Role has always been interested in.
