I feel the same about Peter's growth, I don't see any sense in it, the artist has comics where he draws shota characters, so I guess it's 100% nergal's decision, I thought maybe it would be because of Patreon rules, but now he's using SubscribeStar, so no idea, plus I don't know how the whole babysitting thing is going to make sense.
As for the issue of removing the purity route, it doesn't bother me, I even think that if they did a poll on which of the two routes is the preferred one, the corruption route would win, or at least that's what I've always thought when reading the comments here.