Pregen characters are staples of old DnD.

I still remember some of them from the old Menzoberranzan box set. You could play pregen surface dwellers bringing wild magic into the underdark, or you could play pregen drow from a low ranking noble family.

Tons of modules came with pregen characters.

Anyway, I've played DnD all my life, and I don't have a problem with them. In regards to this game in particular, I think it would be pretty cool to play one of the origin characters with a built in storyline.