Well, if DAI choices are 'hypothetical future choices' then DAO ones are literally non-existent, because King\Queen Cousland can't even sit his\her noble butt on the throne, and that's one of the 'big' (if not the biggest) DAO choices, you know.
Also, for DAI choices 'not to have any consecuences' they'd need either to end the franchise or to declare the first 3 games as a Solas' drunken dream after smoking the wrong kind of lyrium in the Fade.
For the Maker's sake, give us an example of the ACTUAL choices from DAO, those which MATTER in game! DR is, probably, the only one, but it's hard to tell how will it be any more important than a WoS. Rest of the choices are either cosmetic (like which unit is going to be summoned during the Siege) or even less than that.
Lets start:
1: Conner, how you handle him? blood magic? sacrifice? kill his mom? get mages? Multiple options and out comes
2: Elves vs werewolves again multiple options and out comes
3: mage tower: mages or templars who you agree with, companions can also die here and if you choose templars too bad you cannot help connor via mage route and dagna cannot be sent to the circle. Again multiple choices with more consequences which cut you out from options
4: dwarves again can you get golems? no geolems? forge destroyed? thaig found? Hell you can make branka kill her self with a dialogue if you do it right. a RPG where we can actually use *gasps* words to resolve a situation.
5: the entire landsmeet and how it plays out
All the outcomes also change what you have and their outcomes are visible right there in the game. You want blood mage spec sacrifice connor to get it since as lore says demons taught it to men. Want reaver side with the dragon fanatic cult.
most of your companions could die, killed off due to you choices. Zevran dead, leliana dead, wynee dead, loghain dead, sten dead, Oghren dead too. All of it was possible since you actually had proper choice and their consequences.
I am sorry but it looks like you have never even played origins to even realise why people say it was the best in the series, a RPG series which now is barely one. Even our voiceless wardens had more story and development than the beige inquisitor.
But dont you are dare say the current kids fantasy of a game we got can even compare in terms of C&C to origins and that is why people will always say it was their best game. As a RPG inquisition can barely be called one and its combat is significantly weaker than origins as well.