People called them on Quests that had nothing to do with the main storyline. In fact that was something that I recall being a complaint with ME 1.
For example: "Why are we stopping to help these people when we're chasing Saren?" was a complaint I saw....here's a more recent one for ME1
That's why you no longer get side-quests that have nothing to do with the main story.
Some more comments about Mass Effect 1:
The point isnt about the side quest having anything to do with the main plot. The point is that at least the side quest in KOTOR, Jade Empire, Mass Effect, Dragon Age: Origins, Mass Effect 2, Dragon Age 2, and Mass Effect 3 were all quest that had deeper elements thaN what DAI had.
KOTOR had the Taris duel arena. It had the Datooine family fued, lost droid, murder trial etc...
Mass Effect had the Major Kyle cult quest, Asari Consort, Citadel rogue VI, the Hostage takeover etc....
I can continue on but I am crunched for time. Yes, the games listed above had their share of fetch quest, but they were balanced with other, more engaging quest with cinematic dialog and branching decisions/outcomes.
DAI had NOTHING like this. The side quest in this game were all entirely fetch quest similar to a MMO.....like SWTOR.