This is not the flex they think it is. It's not that fetch quests suck, it's how they're presented.
Ubisoft sucks at it. Grab 100 feathers. Climb all 20 towers. It's mechanical in its delivery and the payoff is often stupid like a bump to your stats.
But look at Zelda. Find all 8 triforce pieces. Or Dark Souls. Get the two halves of the elevator medallion. The journey feels real. Even Skyrim's optional fetch quest - collect all the dragon masks, the delivery is amazing.
And in a role playing game, hanging out and enjoying the world has its benefits.