Pure speculation on my part: c-suite wanted the old regions written out with a view towards continuing to reinvent Dragon Age as a YA or romantasy setting going forward. Chasing the ever cryptozoological modern audience, tasteless and profitable, "unburdened by what has been" so to speak.
I don't know, I don't buy it. Isn't Tevinter also technically an old region? I think it's the decision of the writers, who were too high on their own farts. When you have no respect for the original work, it makes you do crazy things.
If you read some of the things Epler and Busche have said, it's clear they felt weighed down by established lore and player's choices. Their approach was to avoid complication rather than embrace it. Here's an Epler quote from
this IGN interview:
For Dragon Age: The Veilguard, among many reasons why we moved to Northern Thedas is it becomes a little bit more of a clean slate for us. There's not as many decisions you have made up to this point that have an impact on what's happening in Northern Thedas. And we don't have to speak directly to things like who is the Divine? Because again, that's happening in the South.
They see complicated narrative as a liability and resent the CRPG player base that demands it. Since Origins they've been trying to ditch that fanbase by appealing to the brainless button=awesome crowd. Nuking the DA lore is just another step in that direction.
Fair enough, as I've noted before, I have no experience with the setting myself to draw on. From the outside looking in, Veilguard seems like a distinct tonal shift towards the preferences of a different specific audience rather than those of the typical lowest common denominator.
I think you're both right, actually. The new group of writers wanted to nuke the lore in order to make room for their self-inserts and whatever else their brilliant minds could conjure up, unburdened by what came before. And what they wanted to do with that clean slate was to write YA style romantacy. One of the few remaining mysteries in my mind is whether this was due to a push from EA to go after the younger audience (them dumping 120 million into the utterly horrid Immortals of Aveum which - yes I stand by this - had worse YA/Marvel writing than even Veilguard, remains very perplexing) or a deliberate choice by the writers.
Personally I'm leaning towards it coming primarily from the writers. There was one point in the trans critique that jumped out at me, about how similar all the writing feels to something called BookToc, right down to specific tropes and the terror of offending anyone. I've never heard of this community, but we all know how easy it is to get sucked into and consumed by groupthink, so I can most definitely see a group of writers up the asshole of this community shitting out this drivel and thinking "yeah .... BookToc is gonna love this."
Which they probably did. Problem is that it still fucking sucks. And when reality slaps back, it does it with an open hand.