Ideas
As of this posting, I'm not getting an "ask for present" interaction with Clement Frost at all. No CC or mods and playing on PC. With my current family, which I play exclusively, so not sure about other households, I've not been able to ask for presents by any family member, child or adult (no toddlers present in current family at time of Winterfest). I've checked the full social tree and no option for "ask for present" has been available for my entire playthrough. My starting Sims are now elders, so this has been going on for many Sim years. I agree with a previous post that it became very common within the last year (Romance, Life & Death), but it was happening before that (though not consistently with every family member/every holiday, as it is now).