One, that's a weird one to bring up as there's really nothing wrong with your sentence, what you're using it for is to imply something else that is a problem though -- the content that sexualises children. Two, there is everything wrong with the sexualisation content.

To elaborate beyond two sentences... I assume you're referring to Dragon Maid and more specifically Kanna which is an odd example as Kanna doesn't really strike me as problematicly depicted. It's pretty wholesome and she's shown in child/parent relationships the whole time, what does strike me as problematic in that show is actually Lucoa (blonde dragon) and her shota-baiting relationship with the 10 year old boy named with no hint of hiding it -- shouta. I do agree however that anybody looking at Kanna and trying to pretend she's not a child due to the whole dragon thing needs some time in re-education, that element of the "thousand year old child" does have its problems and people in the audience that don't accept that need to be chastised.

It would be good for the community to actually address these things as the problems they are in a space where we can bin off the garbage entirely, and useful for comrades that want to be able to ask the question "does this have x in it?" because they'd like to avoid that content but not get downvoted into oblivion for daring to dislike the sexualisation of children that so many in the reactionary communities are just A-OK with.