1) They might be there to drive exploration, but they are still bad,
No, they are good for driving exploration.
which was my point, and driving exploration does not necessarily make them fun to do.
If you don't like exploring, sure. But even people who don't like exploring can get something out of these quests, provided they are not doctrinaire opponents of the activity. Luckily, one rarely finds doctrinaire opponents outside of Internet forums.
2) That part is obvious
And there are other parts of the game which are less explicitly about exploring, but nevertheless can be profitably treated as being such.
3) The majority of the people that criticize the game*
Whoever they may be.
4) Again, you still haven't demonstrated how just because the quests are meant to drive exploration, it 1) makes them enjoyable and 2) makes them any less bad
The nice thing is that DAI fetch quests, for the most part, do not fit this template. Rather than talking to someone to initiate them, they're acquired automatically by entering an area, or reading some lore, or finding an item on the ground. You never talk to anyone, and hence there is no dissonant moment when the high-and-mighty Inquisitor gets treated as a random nobody. There are exceptions, but they're few in number.
So, what are these quests then? I see them as basically act as a way to draw you into exploring the map: uncovering the blank areas, looking for ways to get to the next ridge, and so on. The standard quests like rifts, shards and astrariums are intended for this, but most of the other quests can be approached in the same way. They are also puzzles: how do you get to that annoying shard up on the hill, or find the landmark that doesn't show? Figuring out the paths to these quest objects was something that gave me a surprising amount of satisfaction; no doubt because I was focused on the process rather than the goal. If I'd taken a traditional OCD/completionist approach focused on efficiency and mechanically crossing off each quest in the journal, I'd probably have become frustrated and given up before long.
5) Too bad the point still stands, just because you enjoy something, that doesn't mean it's good. Point in case: Twilight, a bad book, enjoyed by millions of fangirls. McDonalds has little to do with it, at this point it seems like you're just grasping at straws.
But McDonalds is such a good metaphor. It's enjoyed by millions, plus it involves food. All the best arguments by metaphor involve food.