I've already explained it in the parent comment. Before screen time, there was no other way to achieve parental control, so they probably decided to go with tho

I've already explained it in the parent comment. Before screen time, there was no other way to achieve parental control, so they probably decided to go with those solutions, for the lack of a better option. Screen Time changed the situation and there's no reason to keep those privacy nightmares in the App Store any longer. You can achieve the goal of parental control via less privacy intrusive means, which you couldn't do before. Whether you actually should is an entirely different matter IMO.