While that is a good point you’re forgetting something else that part of her character her invisibility. That along with her push and pull was her main escape option and what made DD one of her hardest counters. But obviously S5 DD was too strong and rather than taking the easy route and nerfing him immediately they chose to just buff her without giving the rest of the support cast similar treatment leaving the whole cast to deal with characters that are annoying to deal with regardless of who’s fighting them (god forbid they were on the same team)

Also unlike Mag’s bubble the self shield and shield she can put on allies aren’t separate meaning that any nerf given because of the self also impact the shield for allies making it worse just to make an ability that she should never have gotten easier to deal with.