Are they? Who says? At the very least we have many fans who don't even see why we should take notes from Witcher 3. No Twitter vibes or PR from Bioware acknowledging the numerous things we're pointing out except one Bioware exec said they heard about our complaints about fetch quests.
For some people, Thedas is the most intriguing game world out there, and perhaps the most valuable and important fictional means of escape in our lives. I've followed it for years...a very important number of years defining my 20's and I'll never have my 20's back again.
The stakes are high.
Sorry, but what do you think the devs are doing, exactly? Sitting around all day and twiddling their thumbs while completely ignoring reality? Just because they're not spilling details on everything they've done and have kept things pretty much under wraps for a long time doesn't mean that they've ignored the voluminous amounts of feedback from everyone on ME3 or DA:I.
I'm fairly certain that unless all the devs live under rocks, they're actually aware of everyone's dissatisfaction with certain aspects of DA:I and the general disdain with which most people view generic fetch quests, along with all the other stuff (hairstyles still being crap, the ending of DA:I being too abrupt in some ways, wanting better UIs, not liking how DA:I handled via KBM controls, etc., etc. - I could go on, but I won't).
Now I don't like boring, poorly thought-out fetch quests that amount to crappy filler either. I also - after having read about ten million of these kinds of threads in the DA:I forums - just don't think the world needs yet another thread containing yet another essay/ode to TW3. This has been hashed out multiple times now in the DA:I forums specifically (and I spent a good long time there reading and posting regularly until things ran their course and I lost interest - you can really only read the same things so many times...).
Also, as far as I'm concerned, saying that the stakes are high is a bit melodramatic. The stakes are only as high as they've always been for BW itself: the company needs to produce a good product that is well received or the company won't make money, as has always been the case. I think they're aware that they've disappointed a number of fans over x/y/z in recent games, so if they've been smart, they'll have listened to the fans (about issues with actual merit to them) and will have - one would hope - addressed as many of those concerns as they can.
Now your personal time commitment and whatever importance you personally place on the time you spent on <x> franchise only means that the stakes are inordinately high for you because you are so invested in the game. I'm a DA fan, a BG fan, a KOTOR fan, a JE fan, and an ME fan. I'm not going to get my 20s or my 30s back at this point, but I also don't feel like it means that the stakes are somehow higher for me just because I chose to invest a whole lot of my time in playing BW games and/or posting about them and really, really like all of the characters and the worlds involved.
FYI, I have spent what may well be hundreds of hours on every single one of their games. I think I even spent around 280 hours on SP in DA:I alone (around 220 hours on my current computer and around 60 on my old computer before it died). I spent over 200 hours on DA:O (it's been a while) and the expansion, plus a fair bit of time in DA2 (not nearly as much as the other two games).
If they succeed and have paid attention to the feedback, then good - I'll be happy about it if BW has addressed past flaws in ME:A. If they fail, then I'll be moderately disappointed with them and move on to something else. I get being passionate about a series (I have been quite vocal in the assorted DA forums in the past and the ME forums), but there's being passionate and there's being way, waaaaay too personally invested in a franchise. I saw people acting like complete nutcases over the ME3 endings, and yeah, it seems like those people were invested to a decidedly unhealthy degree.