I am kinda split on this. On the one Hand, I don't want a Character with a Backstory, that includes any significant or potentially traumatic Experiences like, for Example, Mindoir Shepards Experience with Pirates or all three of the great Events (War Hero, Survivor, Ruthless), because those are Events that would greatly shape the Psyche of my Character and I'd have to take into Consideration, ultimately limiting my Ability to roleplay.
HOWEVER.
I very much like the Choices the original Post mentions. This gives us a little more Customization of our Character - how old are they, what do they believe in, what Job Experience do they have. They are not restrictive, but open up more Options to shape our Character, while not implying a huge, life-changing Event that would be invisible to us. They could even open up more Dialogue Options similar to these Inquisition Perks in DA:I.
So, in the End, I am in Support of building a Background, as long as this does not include huge, traumatic. life-changing Experiences, but rather define, who our Character is, how they were raised and such. I ESPECIALLY like the first Bullet Point, where we decide how old our Character is (which could maybe even the hidden Choide of Voice Actors, perhaps? DA:I's german Version didn't have Accents but rather and older and a younger Voice and I adored that). The COmmunity is very diverse age-wise and that Way, everyone could have a Piece of the Cake and not be shoe-horned into a Character of a certain Age.