Drow had drawbacks to somewhat counter their insane bonuses in 3rd and prior editions, like SR11+level, +2 Dex, Int, AND Cha (-2 Con). In 5e, compared with Wood elves or shield dwarves, drow bonuses kind of suck now. Giving them their penalties back would make them nigh unplayable.
I don't think anyone suggested stat penalties, but something more along the lines of dialogue, quest and story penalities... because drow.
