Sometimes, probably: much as I enjoy the Kickstarted board game "Chicken Cesar" I doubt it sells all that well.
But other times the game might sell better in the long run. I suspect the Diacworld RPG book might have a better sales tail than the Kickstarter results would maybe indicate.
I mean, unlike Shadowdark, Avatar was sold in Target for at least a while.
But I would expect the relationship is complicated: I have heard from FLGS owners that Kickstarted board games don't always much of a longterm sales tail.
There isn't traditionally a major Hellenic Pantheon presence in Faerûn, just the Egyptian and Mesopotamian ones in the Old Empires. I doubt that any Egyptian or Mesopotamian deities will be name checked, it will be interesting to see what they do here.
Aa and example, Thebestus is present near the river Ma'ar...but the text merely states that it was built by a nameless "god of knowledge"...no mention of Thoth.
There are some suggestive place names, but they go out of their way to remove any non-D&D deity from the text. We had a while Discourse aboutnit at the time.
Another way to look at these regions is to compare the breakdown to the original FR series, as well as the Grey Box:
The Grey Box zoomed in on the Western Heartlands (now "Sword Coast") and the Eastern Heartlands (now the Heartlands, minus the Vast from the GB, more on thst later)
FR1 was just...
I mean, the more casual and less saga-y nature of a lotnof these books is part of the appeal (other than Drsgonlance specifically), more like old school Swords & Sorcery advebture writing mainly.
There have been 22 novels in this decade so far, a lot tied to tge film, and they are about as good as any of the first three decades of D&D fiction (how's that for damning with faint praise...?).
Just as a for-example, this could be easily multiplied book after book, Dragon Delves (spoilers, I guess?) gives us Cobblehook Cove:
To take out the villain here and save the day, the Level 10 party has 7 combat Encounters, not including traps or the 3 Parrits using the Raven stat block (if...