Why can Soraka still heal minions?

As an avid support player, I've tried out a fair bit following her rework. She's amazing! She's a lot more interesting to play, and has a ton more power alongside more meaningful tradeoffs. The only thing I dislike, however, is that she's still able to heal minions: when playing Soraka, I tend to have Astral Infusion on quick cast, as it helps a lot when clutch-healing, but frequently I accidentally heal a minion instead of my ally. This is obviously bad on my side, as my ally doesn't get healed while I also lose health, but this also likely causes an unnecessary inconvenience to my opponents when last hitting. Was Soraka's ability to heal minions preserved intentionally? I personally don't think losing health in order to delay CS is a meaningful tradeoff, and limiting the heal to champions only would be a tremendous QoL buff to her (not that she needs buffs right now).

To all the Soraka players here: what do you think of her minion healing abilities? Have you had similar experiences when trying to heal allies? Would you like to have her keep her minion healing, or would you rather see it removed? To those playing against Soraka: how often have you seen Soraka use her heal on a minion you were trying to last hit? When something like that happened, how did it affect your gameplay?