The problem here is that Jeffry's determination is not necessarily synonymous with what all the fans thought. As a big DA:I fan, I actually prefer DA:O's gameplay, specifically because I loved my Mage/Arcane Warrior/Blood Mage/Battle Mage. But I don't have the ability to determine what everyone else thought of that gameplay.
As a huge fan of DA:O, I could still point out the idiocy of Loghain as a villain or that we're forced to remain in Ferelden, a tactically bad option, even while recognizing that other people think DA:O had a great storyline.
My point here is that saying "I think the story/gameplay is terrible" on an individual level doesn't mean anything in the long run, since it's entirely possible that a lot of fans who played DA:O enjoyed it in spite of the combat system, not because of it.
Yeah, there are fans who think that DAI is the best DA game or the best game in the history of ever, I know of them, but I think they are very wrong, since there are so many documented issues and bad design decisions that DAI could not objectively pass as GOTY or the best game ever. One could still like it more than any other game he has played, but that doesn't make it a good game.
And there are many cases where we can objectively say what is better and what is worse. In the case of DAO's vs DAI's gameplay, DAO wins simply by the amount of choices how you could build your characters and how you could play the game. And the same thing goes for the story, I am not saying DAI didn't have some cool choices built into the main story, but in the end it felt like none of them mattered one bit, the pacing was terrible (because of the open world element) and the ending was really weak (the plot twist in the post-credits scene was cool, although a bit DLC/sequel baiting).
Again, not saying people can't enjoy or love these aspects of the game, they very well can. I too enjoy some games (or movies) that others describe as bad and I agree with them, because I am aware of how bad they are, they are simply my guilty pleasure.
I for one do not understand how one can buy something on the expectations/hype alone, I never watched the promotions, btw, and I will never do. The game runs reasonably fine for me, so there is that too. And I merely bring myself as example to show that there are people who treat games differently, what you do is entirely up to you.
I didn't buy the game on the expectations/hype alone. I bought the game because I used to be a huge BW fan, ever since I first played BG2 and I still love all their past games I have played. I bought the game, because I trusted them even despite their previous fails (lies about ME3 ending, SWTOR released with very little end-game content, DA2 rushed, DAO:A rushed and buggy), since they always managed to somehow make it better, either acknowledged they made a mistake or they worked really hard to fix it (or at the very least allowed and actually helped us to improve / tweak the game as we see fit). And I also bought the game because I was assured it will meet my expectations time and time again, that the gameplay would be very similar to DAO (which I loved), that the game was made by PC gamers for PC gamers, etc. etc. In retrospect my expectations should have been a bit lower (since BW is not the same company they used to be and I should have realized that sooner) and they for sure will be for any game ever to be released (especially if it is by EA or other major publishers, the year 2014 was really good to show us what those companies are willing to do), but it is not my fault they were set higher. Unfortunately video game developers and publishers can't really be held accountable for false advertising and there is nothing I can do about that, except not buying their games in the future.