This is what she’s angry about
Get a fucking grip, Ayesha. This is like being offended by Tesco selling tampons or toothbrushes or something.
an older child, who is also innocent, might understand what it is
By definition, if someone knows what these things are, they aren’t “innocent”. It’s not like they scream sex toy. They even look like they could be vapes or something.
Given that most people get Pokémon cards in packs of, at least, 15, and their first is usually a whole deck, I dunno if you could really get a lot of people who remember their first card, I definitely don’t! My favourite is definitely Growlithe, but I have no recollection of what my first cards were really, it’s too long ago!