I have PS:T installed on my computer and I'm pretty sure there is combat.
Yeah, a little that's unavoidable but it's not very good and laughably easy. So not the focus at all, same as disco elysium apparently. They could have just left it out completely and the game would stay pretty much the same.
True. It has a cult following nonetheless which leads me to believe it doesn't matter if BG3 winds up having one, two, three or more combat modes. The sum of its parts is what will determine whether it is a success in the end. However, making the game accessible to more people could reinforce their decision to purchase it at launch, buy the DLC etc.