Your kid self isn't really wrong. However, your kid self is comparing the "mass market" versions of things while your adult self understands that "mass market" kind of sucks.
Mass market "fruit cake" is terrible. A "proper fruit cake" has a ludicrous amount of alcohol in it and is quite a different beast. I suspect I've never had "genuine" marzipan. And a chocolate peanut butter cup or creme filled donut made by hand at your local store is very different from anything "mass market".
However, I will also say that kid you is remembering a different food as well. Reeses cups have gotten terrible--the chocolate and peanut butter have gotten nasty. Similarly for creme filled donuts, I'm pretty sure that they don't even wave a dairy product over those anymore at Dunkin Donuts.